andre/the-swift-programming-language-in-chinese
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

make the structure standard

Browse Source
This commit is contained in:
numbbbbb
2014-06-05 10:27:37 +08:00
parent 7e13dc910c
commit 46ced46a0a
82 changed files with 22776 additions and 1339 deletions
Download Patch File Download Diff File Expand all files Collapse all files

635
chapter1/01_swift.html Normal file
View File

@ -0,0 +1,635 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>关于 Swift | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter1/02_a_swift_tour.html" />
<link rel="prev" href="../chapter1/chapter1.html" />
<meta property="og:title" content="关于 Swift | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="1.1" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 5.405405405405405%;min-width: 2.7027027027027026%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_5">
<h1 id="-swift">关于 Swift</h1>
<p>Swift 是一种新的编程语言，用于编写 iOS 和 OS X 应用程序。Swift 结合了 C 和 Objective-C 的优点并且不受C的兼容性的限制。Swift 使用安全的编程模式并添加了很多新特性，这将使编程更简单，扩展性更强，也更有趣。除此之外，Swift 还支持人见人爱的 Cocoa 和 Cocoa Touch 框架。拥有了这些特性，Swift将重新定义软件开发。</p>
<p>Swift 的开发从很久之前就开始了。为了给 Swift 打好基础，苹果公司改进了编译器，调试器和框架结构。我们使用自动引用计数（Automatic Reference Counting, ARC）来简化内存管理。我们在 Foundation 和 Cocoa的基础上构建框架栈并将其标准化。Objective-C 本身支持块、集合语法和模块，所以框架可以轻松支持现代编程语言技术。得益于这些基础工作，我们现在可以发布一个新语言，用于未来的苹果软件的开发。</p>
<p>Objective-C 开发者对于 Swift 并不会感到陌生。它采用了 Objective-C 的命名参数以及动态对象模型，可以无缝对接到现有的 Cocoa 框架，并且可以兼容 Objective-C 代码。在此基础之上，Swift 还有许多新特性并且支持过程式编程和面向对象编程。</p>
<p>Swift 对于初学者来说也很友好。它是第一个既满足工业标准又像脚本语言一样充满表现力和趣味的编程语言。它支持代码预览，这个革命性的特性可以允许程序员在不编译和运行应用程序的前提下运行 Swift 代码并实时查看结果。</p>
<p>Swift 将现代编程语言的精华和苹果工程师文化的智慧结合了起来。编译器对性能进行了优化，编程语言对开发进行了优化，两者互不干扰，鱼与熊掌兼得。Swift 即可以用于开发“hello, world”这样的小程序，也可以用于开发一个完整的操作系统。所有的这些特性让 Swift 对于开发者和苹果来说都是一项值得的投资。</p>
<p>用 Swift 编写 iOS 和 OS X 应用将是一场美妙的体验，Swift 之后也会不断开发新特性和兼容性。我们对 Swift 充满信心，你还在等什么！</p>
</section>
</div>
</div>
</div>
<a href="../chapter1/chapter1.html" class="navigation navigation-prev " aria-label="Previous page: 欢迎使用 Swift"><i class="fa fa-angle-left"></i></a>
<a href="../chapter1/02_a_swift_tour.html" class="navigation navigation-next " aria-label="Next page: Swift 初见"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

392
chapter1/a_swift_tour.html → chapter1/02_a_swift_tour.html
View File

@ -15,10 +15,10 @@
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/the_basics.html" />
<link rel="next" href="../chapter2/chapter2.html" />
<link rel="prev" href="../chapter1/swift.html" />
<link rel="prev" href="../chapter1/01_swift.html" />
<meta property="og:title" content="Swift 初见 | Swift 编程语言">
@ -46,7 +46,7 @@
<div class="book" data-level="1.2" data-basepath=".." data-revision="1401919801865">
<div class="book" data-level="1.2" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
@ -123,9 +123,9 @@
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/README.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
@ -133,18 +133,18 @@
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
@ -156,9 +156,9 @@
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/the_basics.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
@ -166,31 +166,307 @@
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/article_1.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/basic_operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/strings_and_characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
@ -215,32 +491,92 @@
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 42.857142857142854%;min-width: 28.571428571428573%;"></div>
<div class="inner" style="width: 8.108108108108109%;min-width: 5.405405405405405%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_7">
<section class="normal" id="section-gitbook_6">
<h1 id="swift-">Swift 初见</h1>
<p>通常来说，编程语言教程中的第一个程序应该在屏幕上打印“Hello, world”。在 Swift 中，可以用一行代码实现：</p>
@ -754,10 +1090,10 @@ anyCommonElements([1, 2, 3], [3])
</div>
<a href="../chapter1/swift.html" class="navigation navigation-prev " aria-label="Previous page: 关于 Swift"><i class="fa fa-angle-left"></i></a>
<a href="../chapter1/01_swift.html" class="navigation navigation-prev " aria-label="Previous page: 关于 Swift"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/the_basics.html" class="navigation navigation-next " aria-label="Next page: Swift 教程"><i class="fa fa-angle-right"></i></a>
<a href="../chapter2/chapter2.html" class="navigation navigation-next " aria-label="Next page: Swift 教程"><i class="fa fa-angle-right"></i></a>
</div>
</div>

294
chapter1/README.html
View File

@ -1,294 +0,0 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>欢迎使用 Swift | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter1/swift.html" />
<link rel="prev" href="../index.html" />
<meta property="og:title" content="欢迎使用 Swift | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="1" data-basepath=".." data-revision="1401919801865">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<a href="../chapter1/README.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<a href="../chapter1/swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<a href="../chapter2/the_basics.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<a href="../chapter2/article_1.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<a href="../chapter2/basic_operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<a href="../chapter2/strings_and_characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 14.285714285714286%;min-width: 0%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_6">
<h1 id="-swift">欢迎使用 Swift</h1>
<p>在本章中您将了解 Swift 的特性和开发历史，并对 Swift 有一个初步的了解。</p>
</section>
</div>
</div>
</div>
<a href="../index.html" class="navigation navigation-prev " aria-label="Previous page: Introduction"><i class="fa fa-angle-left"></i></a>
<a href="../chapter1/swift.html" class="navigation navigation-next " aria-label="Next page: 关于 Swift"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

630
chapter1/chapter1.html Normal file
View File

@ -0,0 +1,630 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>欢迎使用 Swift | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter1/01_swift.html" />
<link rel="prev" href="../index.html" />
<meta property="og:title" content="欢迎使用 Swift | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="1" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 2.7027027027027026%;min-width: 0%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_7">
<h1 id="-swift">欢迎使用 Swift</h1>
<p>在本章中您将了解 Swift 的特性和开发历史，并对 Swift 有一个初步的了解。</p>
</section>
</div>
</div>
</div>
<a href="../index.html" class="navigation navigation-prev " aria-label="Previous page: Introduction"><i class="fa fa-angle-left"></i></a>
<a href="../chapter1/01_swift.html" class="navigation navigation-next " aria-label="Next page: 关于 Swift"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

299
chapter1/swift.html
View File

@ -1,299 +0,0 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>关于 Swift | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter1/a_swift_tour.html" />
<link rel="prev" href="../chapter1/README.html" />
<meta property="og:title" content="关于 Swift | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="1.1" data-basepath=".." data-revision="1401919801865">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<a href="../chapter1/README.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<a href="../chapter1/swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<a href="../chapter2/the_basics.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<a href="../chapter2/article_1.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<a href="../chapter2/basic_operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<a href="../chapter2/strings_and_characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 28.571428571428573%;min-width: 14.285714285714286%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_8">
<h1 id="-swift">关于 Swift</h1>
<p>Swift 是一种新的编程语言，用于编写 iOS 和 OS X 应用程序。Swift 结合了 C 和 Objective-C 的优点并且不受C的兼容性的限制。Swift 使用安全的编程模式并添加了很多新特性，这将使编程更简单，扩展性更强，也更有趣。除此之外，Swift 还支持人见人爱的 Cocoa 和 Cocoa Touch 框架。拥有了这些特性，Swift将重新定义软件开发。</p>
<p>Swift 的开发从很久之前就开始了。为了给 Swift 打好基础，苹果公司改进了编译器，调试器和框架结构。我们使用自动引用计数（Automatic Reference Counting, ARC）来简化内存管理。我们在 Foundation 和 Cocoa的基础上构建框架栈并将其标准化。Objective-C 本身支持块、集合语法和模块，所以框架可以轻松支持现代编程语言技术。得益于这些基础工作，我们现在可以发布一个新语言，用于未来的苹果软件的开发。</p>
<p>Objective-C 开发者对于 Swift 并不会感到陌生。它采用了 Objective-C 的命名参数以及动态对象模型，可以无缝对接到现有的 Cocoa 框架，并且可以兼容 Objective-C 代码。在此基础之上，Swift 还有许多新特性并且支持过程式编程和面向对象编程。</p>
<p>Swift 对于初学者来说也很友好。它是第一个既满足工业标准又像脚本语言一样充满表现力和趣味的编程语言。它支持代码预览，这个革命性的特性可以允许程序员在不编译和运行应用程序的前提下运行 Swift 代码并实时查看结果。</p>
<p>Swift 将现代编程语言的精华和苹果工程师文化的智慧结合了起来。编译器对性能进行了优化，编程语言对开发进行了优化，两者互不干扰，鱼与熊掌兼得。Swift 即可以用于开发“hello, world”这样的小程序，也可以用于开发一个完整的操作系统。所有的这些特性让 Swift 对于开发者和苹果来说都是一项值得的投资。</p>
<p>用 Swift 编写 iOS 和 OS X 应用将是一场美妙的体验，Swift 之后也会不断开发新特性和兼容性。我们对 Swift 充满信心，你还在等什么！</p>
</section>
</div>
</div>
</div>
<a href="../chapter1/README.html" class="navigation navigation-prev " aria-label="Previous page: 欢迎使用 Swift"><i class="fa fa-angle-left"></i></a>
<a href="../chapter1/a_swift_tour.html" class="navigation navigation-next " aria-label="Next page: Swift 初见"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

390
chapter2/article_1.html → chapter2/01_The_Basics.html
View File

@ -15,10 +15,10 @@
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/basic_operators.html" />
<link rel="next" href="../chapter2/02_Basic_Operators.html" />
<link rel="prev" href="../chapter2/the_basics.html" />
<link rel="prev" href="../chapter2/chapter2.html" />
<meta property="og:title" content="基础部分 | Swift 编程语言">
@ -46,7 +46,7 @@
<div class="book" data-level="2.1" data-basepath=".." data-revision="1401919801865">
<div class="book" data-level="2.1" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
@ -123,9 +123,9 @@
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/README.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
@ -133,18 +133,18 @@
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
@ -156,9 +156,9 @@
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/the_basics.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
@ -166,31 +166,307 @@
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/article_1.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/basic_operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/strings_and_characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
@ -215,25 +491,85 @@
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 71.42857142857143%;min-width: 57.142857142857146%;"></div>
<div class="inner" style="width: 13.513513513513514%;min-width: 10.81081081081081%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
@ -317,10 +653,10 @@ var currentLoginAttempt = 0
</div>
<a href="../chapter2/the_basics.html" class="navigation navigation-prev " aria-label="Previous page: Swift 教程"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/chapter2.html" class="navigation navigation-prev " aria-label="Previous page: Swift 教程"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/basic_operators.html" class="navigation navigation-next " aria-label="Next page: 基本操作符"><i class="fa fa-angle-right"></i></a>
<a href="../chapter2/02_Basic_Operators.html" class="navigation navigation-next " aria-label="Next page: 基本操作符"><i class="fa fa-angle-right"></i></a>
</div>
</div>

622
chapter2/02_Basic_Operators.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>基本操作符 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/03_Strings_and_Characters.html" />
<link rel="prev" href="../chapter2/01_The_Basics.html" />
<meta property="og:title" content="基本操作符 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.2" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 43.24324324324324%;min-width: 40.54054054054054%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/01_The_Basics.html" class="navigation navigation-prev " aria-label="Previous page: 基础部分"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/03_Strings_and_Characters.html" class="navigation navigation-next " aria-label="Next page: 字符串和字符"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

392
chapter2/strings_and_characters.html → chapter2/03_Strings_and_Characters.html
View File

@ -15,8 +15,10 @@
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/04_Collection_Types.html" />
<link rel="prev" href="../chapter2/basic_operators.html" />
<link rel="prev" href="../chapter2/02_Basic_Operators.html" />
<meta property="og:title" content="字符串和字符 | Swift 编程语言">
@ -44,7 +46,7 @@
<div class="book" data-level="2.3" data-basepath=".." data-revision="1401919801865">
<div class="book" data-level="2.3" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
@ -121,9 +123,9 @@
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/README.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
@ -131,18 +133,18 @@
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
@ -154,9 +156,9 @@
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/the_basics.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
@ -164,31 +166,307 @@
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/article_1.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/basic_operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/strings_and_characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
@ -213,32 +491,92 @@
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 100%;min-width: 85.71428571428571%;"></div>
<div class="inner" style="width: 56.75675675675676%;min-width: 54.054054054054056%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 100%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_11">
<section class="normal" id="section-gitbook_10">
<h1 id="-strings-and-characters-">字符串和字符 (Strings and Characters)</h1>
<p><strong>String</strong> 是一个有序的字符集合，例如 &quot;hello, world&quot;, &quot;albatross&quot;。Swift 字符串通过 <strong>String</strong> 类型来表示，也可以表示为 <strong>Character</strong> 类型值的集合。</p>
@ -462,9 +800,11 @@ print(&quot;\n&quot;)
</div>
<a href="../chapter2/basic_operators.html" class="navigation navigation-prev navigation-unique" aria-label="Previous page: 基本操作符"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/02_Basic_Operators.html" class="navigation navigation-prev " aria-label="Previous page: 基本操作符"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/04_Collection_Types.html" class="navigation navigation-next " aria-label="Next page: 集合类型"><i class="fa fa-angle-right"></i></a>
</div>
</div>

622
chapter2/04_Collection_Types.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>集合类型 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/05_Control_Flow.html" />
<link rel="prev" href="../chapter2/03_Strings_and_Characters.html" />
<meta property="og:title" content="集合类型 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.4" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 59.45945945945946%;min-width: 56.75675675675676%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/03_Strings_and_Characters.html" class="navigation navigation-prev " aria-label="Previous page: 字符串和字符"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/05_Control_Flow.html" class="navigation navigation-next " aria-label="Next page: 控制流"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/05_Control_Flow.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>控制流 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/06_Functions.html" />
<link rel="prev" href="../chapter2/04_Collection_Types.html" />
<meta property="og:title" content="控制流 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.5" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 62.16216216216216%;min-width: 59.45945945945946%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/04_Collection_Types.html" class="navigation navigation-prev " aria-label="Previous page: 集合类型"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/06_Functions.html" class="navigation navigation-next " aria-label="Next page: 函数"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

656
chapter2/06_Functions.html Normal file
View File

@ -0,0 +1,656 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>函数 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/07_Closures.html" />
<link rel="prev" href="../chapter2/05_Control_Flow.html" />
<meta property="og:title" content="函数 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.6" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 64.86486486486487%;min-width: 62.16216216216216%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_13">
<h1 id="-functions-">函数（Functions）</h1>
<p>函数是用来完成特定任务的独立的代码块。你给一个函数起一个合适的名字，用来标示函数做什么，并且当函数需要执行的时候，这个名字会被“调用”。</p>
<p>Swift统一的函数语法足够灵活，可以用来表示任何函数，包括从最简单的没有参数名字的C风格函数，到复杂的带局部和外部参数名的Objective-C风格函数。参数可以提供默认值，以简化函数调用。参数也可以即当做传入参数，也当做传出参数，也就是说，一旦函数执行结束，传入的参数值可以被修改。</p>
<p>在Swift中，每个函数都有一种类型，包括函数的参数值类型和返回值类型。你可以把函数类型当做任何其他普通变量类型一样处理，这样就可以更简单地把函数当做别的函数的参数，也可以从其他函数中返回函数。函数的定义可以写在在其他函数定义中，这样可以在嵌套函数范围内实现功能封装。</p>
<h2 id="-">函数的定义与调用</h2>
<p>当你定义一个函数时，你可以定义一个或多个有名字和类型的值，作为函数的输入（称为参数，parameters），也可以定义某种类型的值作为函数执行结束的输出（称为返回类型）。</p>
<p>每个函数有个函数名，用来描述函数执行的任务。要使用一个函数时，你用函数名“调用”，并传给它匹配的输入值（称作实参，arguments）。一个函数的实参必须与函数参数表里参数的顺序一致。</p>
<p>在下面例子中的函数叫做<code>&quot;greetingForPerson&quot;</code>，之所以叫这个名字是因为这个函数用一个人的名字当做输入，并返回给这个人的问候语。为了完成这个任务，你定义一个输入参数-一个叫做<code>personName</code>的<code>String</code>值，和一个包含给这个人问候语的<code>String</code>类型的返回值：</p>
<pre><code> func sayHello(personName: String) -&gt; String {
let greeting = &quot;Hello, &quot; + personName + &quot;!&quot;
return greeting
}
</code></pre><p>所有的这些信息汇总起来成为函数的定义，并以<code>func</code>作为前缀。指定函数返回类型时，用返回箭头<code>-&gt;</code>（一个连字符后跟一个右尖括号）后跟返回类型的名称的方式来表示。</p>
<p>该定义描述了函数做什么，它期望接收什么和执行结束时它返回的结果是什么。这样的定义使的函数可以在别的地方以一种清晰的方式被调用：</p>
<pre><code> println(sayHello(&quot;Anna&quot;))
// prints &quot;Hello, Anna!&quot;
println(sayHello(&quot;Brian&quot;))
// prints &quot;Hello, Brian!
</code></pre><p>调用<code>sayHello</code>函数时，在圆括号中传给它一个<code>String</code>类型的实参。因为这个函数返回一个<code>String</code>类型的值，<code>sayHello</code>可以被包含在<code>println</code>的调用中，用来输出这个函数的返回值，正如上面所示。</p>
<p>在<code>sayHello</code>的函数体中，先定义了一个新的名为<code>greeting</code>的<code>String</code>常量，同时赋值了给<code>personName</code>的一个简单问候消息。然后用<code>return</code>关键字把这个问候返回出去。一旦<code>return greeting</code>被调用，该函数结束它的执行并返回<code>greeting</code>的当前值。</p>
<p>你可以用不同的输入值多次调用<code>sayHello</code>。上面的例子展示的是用<code>&quot;Anna&quot;</code>和<code>&quot;Brian&quot;</code>调用的结果，该函数分别返回了不同的结果。</p>
<p>为了简化这个函数的定义，可以将问候消息的创建和返回写成一句：</p>
<pre><code> func sayHelloAgain(personName: String) -&gt; String {
return &quot;Hello again, &quot; + personName + &quot;!&quot;
}
println(sayHelloAgain(&quot;Anna&quot;))
// prints &quot;Hello again, Anna!
</code></pre><h2 id="-">函数参数与返回值</h2>
</section>
</div>
</div>
</div>
<a href="../chapter2/05_Control_Flow.html" class="navigation navigation-prev " aria-label="Previous page: 控制流"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/07_Closures.html" class="navigation navigation-next " aria-label="Next page: 闭包"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/07_Closures.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>闭包 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/08_Enumerations.html" />
<link rel="prev" href="../chapter2/06_Functions.html" />
<meta property="og:title" content="闭包 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.7" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 67.56756756756756%;min-width: 64.86486486486487%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/06_Functions.html" class="navigation navigation-prev " aria-label="Previous page: 函数"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/08_Enumerations.html" class="navigation navigation-next " aria-label="Next page: 枚举"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/08_Enumerations.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>枚举 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/09_Classes_and_Structures.html" />
<link rel="prev" href="../chapter2/07_Closures.html" />
<meta property="og:title" content="枚举 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.8" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 70.27027027027027%;min-width: 67.56756756756756%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/07_Closures.html" class="navigation navigation-prev " aria-label="Previous page: 闭包"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/09_Classes_and_Structures.html" class="navigation navigation-next " aria-label="Next page: 类和结构体"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/09_Classes_and_Structures.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>类和结构体 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/10_Properties.html" />
<link rel="prev" href="../chapter2/08_Enumerations.html" />
<meta property="og:title" content="类和结构体 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.9" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 72.97297297297297%;min-width: 70.27027027027027%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/08_Enumerations.html" class="navigation navigation-prev " aria-label="Previous page: 枚举"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/10_Properties.html" class="navigation navigation-next " aria-label="Next page: 属性"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/10_Properties.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>属性 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/11_Methods.html" />
<link rel="prev" href="../chapter2/09_Classes_and_Structures.html" />
<meta property="og:title" content="属性 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.10" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 16.216216216216218%;min-width: 13.513513513513514%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/09_Classes_and_Structures.html" class="navigation navigation-prev " aria-label="Previous page: 类和结构体"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/11_Methods.html" class="navigation navigation-next " aria-label="Next page: 方法"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/11_Methods.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>方法 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/12_Subscripts.html" />
<link rel="prev" href="../chapter2/10_Properties.html" />
<meta property="og:title" content="方法 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.11" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 18.91891891891892%;min-width: 16.216216216216218%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/10_Properties.html" class="navigation navigation-prev " aria-label="Previous page: 属性"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/12_Subscripts.html" class="navigation navigation-next " aria-label="Next page: 下标"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/12_Subscripts.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>下标 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/13_Inheritance.html" />
<link rel="prev" href="../chapter2/11_Methods.html" />
<meta property="og:title" content="下标 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.12" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 21.62162162162162%;min-width: 18.91891891891892%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/11_Methods.html" class="navigation navigation-prev " aria-label="Previous page: 方法"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/13_Inheritance.html" class="navigation navigation-next " aria-label="Next page: 继承"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/13_Inheritance.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>继承 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/14_Initialization.html" />
<link rel="prev" href="../chapter2/12_Subscripts.html" />
<meta property="og:title" content="继承 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.13" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 24.324324324324323%;min-width: 21.62162162162162%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/12_Subscripts.html" class="navigation navigation-prev " aria-label="Previous page: 下标"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/14_Initialization.html" class="navigation navigation-next " aria-label="Next page: 构造函数"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/14_Initialization.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>构造函数 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/15_Deinitialization.html" />
<link rel="prev" href="../chapter2/13_Inheritance.html" />
<meta property="og:title" content="构造函数 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.14" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 27.027027027027028%;min-width: 24.324324324324323%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/13_Inheritance.html" class="navigation navigation-prev " aria-label="Previous page: 继承"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/15_Deinitialization.html" class="navigation navigation-next " aria-label="Next page: 析构函数"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/15_Deinitialization.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>析构函数 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/16_Automatic_Reference_Counting.html" />
<link rel="prev" href="../chapter2/14_Initialization.html" />
<meta property="og:title" content="析构函数 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.15" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 29.72972972972973%;min-width: 27.027027027027028%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/14_Initialization.html" class="navigation navigation-prev " aria-label="Previous page: 构造函数"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" class="navigation navigation-next " aria-label="Next page: 自动引用计数"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/16_Automatic_Reference_Counting.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>自动引用计数 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/17_Optional_Chaining.html" />
<link rel="prev" href="../chapter2/15_Deinitialization.html" />
<meta property="og:title" content="自动引用计数 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.16" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 32.432432432432435%;min-width: 29.72972972972973%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/15_Deinitialization.html" class="navigation navigation-prev " aria-label="Previous page: 析构函数"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/17_Optional_Chaining.html" class="navigation navigation-next " aria-label="Next page: 可选链"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/17_Optional_Chaining.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>可选链 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/18_Type_Casting.html" />
<link rel="prev" href="../chapter2/16_Automatic_Reference_Counting.html" />
<meta property="og:title" content="可选链 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.17" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 35.13513513513514%;min-width: 32.432432432432435%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/16_Automatic_Reference_Counting.html" class="navigation navigation-prev " aria-label="Previous page: 自动引用计数"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/18_Type_Casting.html" class="navigation navigation-next " aria-label="Next page: 类型检查"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/18_Type_Casting.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>类型检查 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/19_Nested_Types.html" />
<link rel="prev" href="../chapter2/17_Optional_Chaining.html" />
<meta property="og:title" content="类型检查 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.18" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 37.83783783783784%;min-width: 35.13513513513514%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/17_Optional_Chaining.html" class="navigation navigation-prev " aria-label="Previous page: 可选链"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/19_Nested_Types.html" class="navigation navigation-next " aria-label="Next page: 嵌套类型"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/19_Nested_Types.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>嵌套类型 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/20_Extensions.html" />
<link rel="prev" href="../chapter2/18_Type_Casting.html" />
<meta property="og:title" content="嵌套类型 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.19" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 40.54054054054054%;min-width: 37.83783783783784%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/18_Type_Casting.html" class="navigation navigation-prev " aria-label="Previous page: 类型检查"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/20_Extensions.html" class="navigation navigation-next " aria-label="Next page: 扩展"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/20_Extensions.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>扩展 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/21_Protocols.html" />
<link rel="prev" href="../chapter2/19_Nested_Types.html" />
<meta property="og:title" content="扩展 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.20" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 45.945945945945944%;min-width: 43.24324324324324%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/19_Nested_Types.html" class="navigation navigation-prev " aria-label="Previous page: 嵌套类型"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/21_Protocols.html" class="navigation navigation-next " aria-label="Next page: 接口"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/21_Protocols.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>接口 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/22_Generics.html" />
<link rel="prev" href="../chapter2/20_Extensions.html" />
<meta property="og:title" content="接口 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.21" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 48.648648648648646%;min-width: 45.945945945945944%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/20_Extensions.html" class="navigation navigation-prev " aria-label="Previous page: 扩展"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/22_Generics.html" class="navigation navigation-next " aria-label="Next page: 泛型"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/22_Generics.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>泛型 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/23_Advanced_Operators.html" />
<link rel="prev" href="../chapter2/21_Protocols.html" />
<meta property="og:title" content="泛型 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.22" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 51.351351351351354%;min-width: 48.648648648648646%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/21_Protocols.html" class="navigation navigation-prev " aria-label="Previous page: 接口"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/23_Advanced_Operators.html" class="navigation navigation-next " aria-label="Next page: 高级操作符"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter2/23_Advanced_Operators.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>高级操作符 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/chapter3.html" />
<link rel="prev" href="../chapter2/22_Generics.html" />
<meta property="og:title" content="高级操作符 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.23" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 54.054054054054056%;min-width: 51.351351351351354%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/22_Generics.html" class="navigation navigation-prev " aria-label="Previous page: 泛型"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/chapter3.html" class="navigation navigation-next " aria-label="Next page: 语言参考"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

293
chapter2/basic_operators.html
View File

@ -1,293 +0,0 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>基本操作符 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/strings_and_characters.html" />
<link rel="prev" href="../chapter2/article_1.html" />
<meta property="og:title" content="基本操作符 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2.2" data-basepath=".." data-revision="1401919801865">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<a href="../chapter1/README.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<a href="../chapter1/swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<a href="../chapter2/the_basics.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<a href="../chapter2/article_1.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<a href="../chapter2/basic_operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<a href="../chapter2/strings_and_characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 85.71428571428571%;min-width: 71.42857142857143%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_10">
<h1 id="-">基本操作符</h1>
</section>
</div>
</div>
</div>
<a href="../chapter2/article_1.html" class="navigation navigation-prev " aria-label="Previous page: 基础部分"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/strings_and_characters.html" class="navigation navigation-next " aria-label="Next page: 字符串和字符"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

630
chapter2/chapter2.html Normal file
View File

@ -0,0 +1,630 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>Swift 教程 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/01_The_Basics.html" />
<link rel="prev" href="../chapter1/02_a_swift_tour.html" />
<meta property="og:title" content="Swift 教程 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 10.81081081081081%;min-width: 8.108108108108109%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_31">
<h1 id="swift-">Swift 教程</h1>
<p>本章介绍了 Swift 的各种特性及其使用方法，是全书的核心部分。</p>
</section>
</div>
</div>
</div>
<a href="../chapter1/02_a_swift_tour.html" class="navigation navigation-prev " aria-label="Previous page: Swift 初见"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/01_The_Basics.html" class="navigation navigation-next " aria-label="Next page: 基础部分"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

294
chapter2/the_basics.html
View File

@ -1,294 +0,0 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>Swift 教程 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter2/article_1.html" />
<link rel="prev" href="../chapter1/a_swift_tour.html" />
<meta property="og:title" content="Swift 教程 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="2" data-basepath=".." data-revision="1401919801865">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<a href="../chapter1/README.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<a href="../chapter1/swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<a href="../chapter1/a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<a href="../chapter2/the_basics.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<a href="../chapter2/article_1.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<a href="../chapter2/basic_operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<a href="../chapter2/strings_and_characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 57.142857142857146%;min-width: 42.857142857142854%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/README.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="../chapter1/swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="../chapter1/a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="../chapter2/the_basics.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="../chapter2/article_1.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="../chapter2/basic_operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="../chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_12">
<h1 id="swift-">Swift 教程</h1>
<p>本章介绍了 Swift 的各种特性及其使用方法，是全书的核心部分。</p>
</section>
</div>
</div>
</div>
<a href="../chapter1/a_swift_tour.html" class="navigation navigation-prev " aria-label="Previous page: Swift 初见"><i class="fa fa-angle-left"></i></a>
<a href="../chapter2/article_1.html" class="navigation navigation-next " aria-label="Next page: 基础部分"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/01_About_the_Language_Reference.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>关于语言参考 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/02_Lexical_Structure.html" />
<link rel="prev" href="../chapter3/chapter3.html" />
<meta property="og:title" content="关于语言参考 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.1" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 78.37837837837837%;min-width: 75.67567567567568%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/chapter3.html" class="navigation navigation-prev " aria-label="Previous page: 语言参考"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/02_Lexical_Structure.html" class="navigation navigation-next " aria-label="Next page: 词法结构"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/02_Lexical_Structure.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>词法结构 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/03_Types.html" />
<link rel="prev" href="../chapter3/01_About_the_Language_Reference.html" />
<meta property="og:title" content="词法结构 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.2" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 81.08108108108108%;min-width: 78.37837837837837%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/01_About_the_Language_Reference.html" class="navigation navigation-prev " aria-label="Previous page: 关于语言参考"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/03_Types.html" class="navigation navigation-next " aria-label="Next page: 类型"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/03_Types.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>类型 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/04_Expressions.html" />
<link rel="prev" href="../chapter3/02_Lexical_Structure.html" />
<meta property="og:title" content="类型 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.3" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 83.78378378378379%;min-width: 81.08108108108108%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/02_Lexical_Structure.html" class="navigation navigation-prev " aria-label="Previous page: 词法结构"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/04_Expressions.html" class="navigation navigation-next " aria-label="Next page: 表达式"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/04_Expressions.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>表达式 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/05_Declarations.html" />
<link rel="prev" href="../chapter3/03_Types.html" />
<meta property="og:title" content="表达式 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.4" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 86.48648648648648%;min-width: 83.78378378378379%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter done " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/03_Types.html" class="navigation navigation-prev " aria-label="Previous page: 类型"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/05_Declarations.html" class="navigation navigation-next " aria-label="Next page: 声明"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/05_Declarations.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>声明 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/06_Attributes.html" />
<link rel="prev" href="../chapter3/04_Expressions.html" />
<meta property="og:title" content="声明 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.5" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 89.1891891891892%;min-width: 86.48648648648648%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter done " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter done " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/04_Expressions.html" class="navigation navigation-prev " aria-label="Previous page: 表达式"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/06_Attributes.html" class="navigation navigation-next " aria-label="Next page: 属性"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/06_Attributes.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>属性 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/07_Patterns.html" />
<link rel="prev" href="../chapter3/05_Declarations.html" />
<meta property="og:title" content="属性 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.6" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 91.89189189189189%;min-width: 89.1891891891892%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter done " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter done " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter done " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/05_Declarations.html" class="navigation navigation-prev " aria-label="Previous page: 声明"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/07_Patterns.html" class="navigation navigation-next " aria-label="Next page: 模式"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/07_Patterns.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>模式 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/08_Generic_Parameters_and_Arguments.html" />
<link rel="prev" href="../chapter3/06_Attributes.html" />
<meta property="og:title" content="模式 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.7" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 94.5945945945946%;min-width: 91.89189189189189%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter done " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter done " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter done " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter done " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/06_Attributes.html" class="navigation navigation-prev " aria-label="Previous page: 属性"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" class="navigation navigation-next " aria-label="Next page: 泛型参数"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/08_Generic_Parameters_and_Arguments.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>泛型参数 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/09_Summary_of_the_Grammar.html" />
<link rel="prev" href="../chapter3/07_Patterns.html" />
<meta property="og:title" content="泛型参数 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.8" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 97.29729729729729%;min-width: 94.5945945945946%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter done " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter done " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter done " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter done " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter done " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/07_Patterns.html" class="navigation navigation-prev " aria-label="Previous page: 模式"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" class="navigation navigation-next " aria-label="Next page: 语法总结"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

618
chapter3/09_Summary_of_the_Grammar.html Normal file
View File

@ -0,0 +1,618 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>语法总结 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="prev" href="../chapter3/08_Generic_Parameters_and_Arguments.html" />
<meta property="og:title" content="语法总结 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3.9" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 100%;min-width: 97.29729729729729%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter done " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter done " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter done " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter done " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter done " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter done " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter done " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter done " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter done " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" class="navigation navigation-prev navigation-unique" aria-label="Previous page: 泛型参数"><i class="fa fa-angle-left"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

622
chapter3/chapter3.html Normal file
View File

@ -0,0 +1,622 @@
<!DOCTYPE HTML>
<html lang="en-US" manifest="../manifest.appcache">
<head prefix="og: http://ogp.me/ns# book: http://ogp.me/ns/book#">
<meta charset="UTF-8">
<title>语言参考 | Swift 编程语言</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="robots" content="index, follow">
<meta name="author" content="">
<meta name="description" content="Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。">
<meta name="keywords" content="gitbook,github" >
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="../chapter3/01_About_the_Language_Reference.html" />
<link rel="prev" href="../chapter2/23_Advanced_Operators.html" />
<meta property="og:title" content="语言参考 | Swift 编程语言">
<meta property="og:site_name" content="Swift 编程语言">
<meta property="og:type" content="book">
<meta property="og:locale" content="en_US">
<meta property="book:author" content="https://github.com/">
<meta property="book:tag" content="GitBook">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
</head>
<body>
<link rel="stylesheet" href="../gitbook/style.css">
<div class="book" data-level="3" data-basepath=".." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
<a href="https://github.com/null" target="_blank" class="btn pull-left home-bookmark" aria-label="GitHub home"><i class="fa fa-bookmark-o"></i></a>
<a href="#" class="btn pull-left toggle-search" aria-label="Toggle search"><i class="fa fa-search"></i></a>
<span id="font-settings-wrapper">
<a href="#" class="btn pull-left toggle-font-settings" aria-label="Toggle font settings"><i class="fa fa-font"></i>
</a>
<div class="dropdown-menu font-settings">
<div class="dropdown-caret">
<span class="caret-outer"></span>
<span class="caret-inner"></span>
</div>
<div class="btn-group btn-block">
<button id="reduce-font-size" class="btn btn-default">A</button>
<button id="enlarge-font-size" class="btn btn-default">A</button>
</div>
<ul class="list-group font-family-list">
<li class="list-group-item" data-font="0">Serif</li>
<li class="list-group-item" data-font="1">Sans</li>
</ul>
<div class="btn-group btn-group-xs btn-block color-theme-list">
<button type="button" class="btn btn-default" id="color-theme-preview-0" data-theme="0">White</button>
<button type="button" class="btn btn-default" id="color-theme-preview-1" data-theme="1">Sepia</button>
<button type="button" class="btn btn-default" id="color-theme-preview-2" data-theme="2">Night</button>
</div>
</div>
</span>
<!-- Actions Right -->
<a href="#" target="_blank" class="btn pull-right google-plus-sharing-link sharing-link" data-sharing="google-plus" aria-label="Share on Google Plus"><i class="fa fa-google-plus"></i></a>
<a href="#" target="_blank" class="btn pull-right facebook-sharing-link sharing-link" data-sharing="facebook" aria-label="Share on Facebook"><i class="fa fa-facebook"></i></a>
<a href="#" target="_blank" class="btn pull-right twitter-sharing-link sharing-link" data-sharing="twitter" aria-label="Share on Twitter"><i class="fa fa-twitter"></i></a>
<!-- Title -->
<h1>
<i class="fa fa-spinner fa-spin"></i>
<a href="../" >Swift 编程语言</a>
</h1>
</div>
<div class="book-summary">
<div class="book-search">
<input type="text" placeholder="Search" class="form-control" />
</div>
<ul class="summary">
<li data-level="0" data-path="index.html">
<a href="../"><i class="fa fa-check"></i> Introduction</a>
</li>
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="../chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="../chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="../chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="../chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="../chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="../chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="../chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="../chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="../chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="../chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="../chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="../chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="../chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="../chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="../chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="../chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="../chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="../chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="../chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="../chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="../chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="../chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="../chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="../chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="../chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="../chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="../chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="../chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="../chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="../chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="../chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="../chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="../chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="../chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="../chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="../chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Generated using GitBook</a>
</li>
<li style="margin-left:15%;"> <iframe src="http://ghbtns.com/github-btn.html?user=numbbbbb&repo=the-swift-programming-language-in-chinese&type=watch&count=true&size=large"
allowtransparency="true" frameborder="0" scrolling="0" width="170" height="30"></iframe></li>
</ul>
</div>
<div class="book-body">
<div class="body-inner">
<div class="page-wrapper" tabindex="-1">
<div class="book-progress">
<div class="bar">
<div class="inner" style="width: 75.67567567567568%;min-width: 72.97297297297297%;"></div>
</div>
<div class="chapters">
<a href="../index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="../chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter done new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="../chapter1/01_swift.html" title="关于 Swift" class="chapter done " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="../chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter done " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="../chapter2/chapter2.html" title="Swift 教程" class="chapter done new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="../chapter2/01_The_Basics.html" title="基础部分" class="chapter done " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="../chapter2/10_Properties.html" title="属性" class="chapter done " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="../chapter2/11_Methods.html" title="方法" class="chapter done " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="../chapter2/12_Subscripts.html" title="下标" class="chapter done " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="../chapter2/13_Inheritance.html" title="继承" class="chapter done " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="../chapter2/14_Initialization.html" title="构造函数" class="chapter done " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="../chapter2/15_Deinitialization.html" title="析构函数" class="chapter done " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="../chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter done " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="../chapter2/17_Optional_Chaining.html" title="可选链" class="chapter done " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="../chapter2/18_Type_Casting.html" title="类型检查" class="chapter done " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="../chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter done " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="../chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter done " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="../chapter2/20_Extensions.html" title="扩展" class="chapter done " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="../chapter2/21_Protocols.html" title="接口" class="chapter done " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="../chapter2/22_Generics.html" title="泛型" class="chapter done " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="../chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter done " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="../chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter done " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="../chapter2/04_Collection_Types.html" title="集合类型" class="chapter done " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="../chapter2/05_Control_Flow.html" title="控制流" class="chapter done " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="../chapter2/06_Functions.html" title="函数" class="chapter done " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="../chapter2/07_Closures.html" title="闭包" class="chapter done " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="../chapter2/08_Enumerations.html" title="枚举" class="chapter done " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="../chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter done " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="../chapter3/chapter3.html" title="语言参考" class="chapter done new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="../chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="../chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="../chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="../chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="../chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="../chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="../chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="../chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="../chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
</div>
</div>
</div>
<a href="../chapter2/23_Advanced_Operators.html" class="navigation navigation-prev " aria-label="Previous page: 高级操作符"><i class="fa fa-angle-left"></i></a>
<a href="../chapter3/01_About_the_Language_Reference.html" class="navigation navigation-next " aria-label="Next page: 关于语言参考"><i class="fa fa-angle-right"></i></a>
</div>
</div>
<script src="http://cdn.bootcss.com/ace/1.1.3/ace.js"></script>
<script src="http://cdn.bootcss.com/ace/1.1.3/mode-javascript.js"></script>
<script src="../gitbook/jsrepl/jsrepl.js" id="jsrepl-script"></script>
<script src="../gitbook/app.js"></script>
<script src="../gitbook/plugins/gitbook-plugin-mixpanel/plugin.js"></script>
<script src="http://cdn.mathjax.org/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script src="../gitbook/plugins/gitbook-plugin-mathjax/plugin.js"></script>
<script>
require(["gitbook"], function(gitbook) {
var config = {};
gitbook.start(config);
});
</script>
</body>
</html>

386
index.html
View File

@ -15,7 +15,7 @@
<meta name="generator" content="www.gitbook.io">
<link rel="next" href="./chapter1/README.html" />
<link rel="next" href="./chapter1/chapter1.html" />
@ -44,7 +44,7 @@
<div class="book" data-level="0" data-basepath="." data-revision="1401919801865">
<div class="book" data-level="0" data-basepath="." data-revision="1401935155501">
<div class="book-header">
<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
@ -121,9 +121,9 @@
</li>
<li class="chapter " data-level="1" data-path="chapter1/README.html">
<li class="chapter " data-level="1" data-path="chapter1/chapter1.html">
<a href="./chapter1/README.html">
<a href="./chapter1/chapter1.html">
<i class="fa fa-check"></i> <b>1.</b> 欢迎使用 Swift
</a>
@ -131,18 +131,18 @@
<ul class="articles">
<li class="chapter " data-level="1.1" data-path="chapter1/swift.html">
<li class="chapter " data-level="1.1" data-path="chapter1/01_swift.html">
<a href="./chapter1/swift.html">
<a href="./chapter1/01_swift.html">
<i class="fa fa-check"></i> <b>1.1.</b> 关于 Swift
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1/a_swift_tour.html">
<li class="chapter " data-level="1.2" data-path="chapter1/02_a_swift_tour.html">
<a href="./chapter1/a_swift_tour.html">
<a href="./chapter1/02_a_swift_tour.html">
<i class="fa fa-check"></i> <b>1.2.</b> Swift 初见
</a>
@ -154,9 +154,9 @@
</li>
<li class="chapter " data-level="2" data-path="chapter2/the_basics.html">
<li class="chapter " data-level="2" data-path="chapter2/chapter2.html">
<a href="./chapter2/the_basics.html">
<a href="./chapter2/chapter2.html">
<i class="fa fa-check"></i> <b>2.</b> Swift 教程
</a>
@ -164,31 +164,307 @@
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="chapter2/article_1.html">
<li class="chapter " data-level="2.1" data-path="chapter2/01_The_Basics.html">
<a href="./chapter2/article_1.html">
<a href="./chapter2/01_The_Basics.html">
<i class="fa fa-check"></i> <b>2.1.</b> 基础部分
</a>
</li>
<li class="chapter " data-level="2.2" data-path="chapter2/basic_operators.html">
<li class="chapter " data-level="2.2" data-path="chapter2/02_Basic_Operators.html">
<a href="./chapter2/basic_operators.html">
<a href="./chapter2/02_Basic_Operators.html">
<i class="fa fa-check"></i> <b>2.2.</b> 基本操作符
</a>
</li>
<li class="chapter " data-level="2.3" data-path="chapter2/strings_and_characters.html">
<li class="chapter " data-level="2.3" data-path="chapter2/03_Strings_and_Characters.html">
<a href="./chapter2/strings_and_characters.html">
<a href="./chapter2/03_Strings_and_Characters.html">
<i class="fa fa-check"></i> <b>2.3.</b> 字符串和字符
</a>
</li>
<li class="chapter " data-level="2.4" data-path="chapter2/04_Collection_Types.html">
<a href="./chapter2/04_Collection_Types.html">
<i class="fa fa-check"></i> <b>2.4.</b> 集合类型
</a>
</li>
<li class="chapter " data-level="2.5" data-path="chapter2/05_Control_Flow.html">
<a href="./chapter2/05_Control_Flow.html">
<i class="fa fa-check"></i> <b>2.5.</b> 控制流
</a>
</li>
<li class="chapter " data-level="2.6" data-path="chapter2/06_Functions.html">
<a href="./chapter2/06_Functions.html">
<i class="fa fa-check"></i> <b>2.6.</b> 函数
</a>
</li>
<li class="chapter " data-level="2.7" data-path="chapter2/07_Closures.html">
<a href="./chapter2/07_Closures.html">
<i class="fa fa-check"></i> <b>2.7.</b> 闭包
</a>
</li>
<li class="chapter " data-level="2.8" data-path="chapter2/08_Enumerations.html">
<a href="./chapter2/08_Enumerations.html">
<i class="fa fa-check"></i> <b>2.8.</b> 枚举
</a>
</li>
<li class="chapter " data-level="2.9" data-path="chapter2/09_Classes_and_Structures.html">
<a href="./chapter2/09_Classes_and_Structures.html">
<i class="fa fa-check"></i> <b>2.9.</b> 类和结构体
</a>
</li>
<li class="chapter " data-level="2.10" data-path="chapter2/10_Properties.html">
<a href="./chapter2/10_Properties.html">
<i class="fa fa-check"></i> <b>2.10.</b> 属性
</a>
</li>
<li class="chapter " data-level="2.11" data-path="chapter2/11_Methods.html">
<a href="./chapter2/11_Methods.html">
<i class="fa fa-check"></i> <b>2.11.</b> 方法
</a>
</li>
<li class="chapter " data-level="2.12" data-path="chapter2/12_Subscripts.html">
<a href="./chapter2/12_Subscripts.html">
<i class="fa fa-check"></i> <b>2.12.</b> 下标
</a>
</li>
<li class="chapter " data-level="2.13" data-path="chapter2/13_Inheritance.html">
<a href="./chapter2/13_Inheritance.html">
<i class="fa fa-check"></i> <b>2.13.</b> 继承
</a>
</li>
<li class="chapter " data-level="2.14" data-path="chapter2/14_Initialization.html">
<a href="./chapter2/14_Initialization.html">
<i class="fa fa-check"></i> <b>2.14.</b> 构造函数
</a>
</li>
<li class="chapter " data-level="2.15" data-path="chapter2/15_Deinitialization.html">
<a href="./chapter2/15_Deinitialization.html">
<i class="fa fa-check"></i> <b>2.15.</b> 析构函数
</a>
</li>
<li class="chapter " data-level="2.16" data-path="chapter2/16_Automatic_Reference_Counting.html">
<a href="./chapter2/16_Automatic_Reference_Counting.html">
<i class="fa fa-check"></i> <b>2.16.</b> 自动引用计数
</a>
</li>
<li class="chapter " data-level="2.17" data-path="chapter2/17_Optional_Chaining.html">
<a href="./chapter2/17_Optional_Chaining.html">
<i class="fa fa-check"></i> <b>2.17.</b> 可选链
</a>
</li>
<li class="chapter " data-level="2.18" data-path="chapter2/18_Type_Casting.html">
<a href="./chapter2/18_Type_Casting.html">
<i class="fa fa-check"></i> <b>2.18.</b> 类型检查
</a>
</li>
<li class="chapter " data-level="2.19" data-path="chapter2/19_Nested_Types.html">
<a href="./chapter2/19_Nested_Types.html">
<i class="fa fa-check"></i> <b>2.19.</b> 嵌套类型
</a>
</li>
<li class="chapter " data-level="2.20" data-path="chapter2/20_Extensions.html">
<a href="./chapter2/20_Extensions.html">
<i class="fa fa-check"></i> <b>2.20.</b> 扩展
</a>
</li>
<li class="chapter " data-level="2.21" data-path="chapter2/21_Protocols.html">
<a href="./chapter2/21_Protocols.html">
<i class="fa fa-check"></i> <b>2.21.</b> 接口
</a>
</li>
<li class="chapter " data-level="2.22" data-path="chapter2/22_Generics.html">
<a href="./chapter2/22_Generics.html">
<i class="fa fa-check"></i> <b>2.22.</b> 泛型
</a>
</li>
<li class="chapter " data-level="2.23" data-path="chapter2/23_Advanced_Operators.html">
<a href="./chapter2/23_Advanced_Operators.html">
<i class="fa fa-check"></i> <b>2.23.</b> 高级操作符
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="chapter3/chapter3.html">
<a href="./chapter3/chapter3.html">
<i class="fa fa-check"></i> <b>3.</b> 语言参考
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="chapter3/01_About_the_Language_Reference.html">
<a href="./chapter3/01_About_the_Language_Reference.html">
<i class="fa fa-check"></i> <b>3.1.</b> 关于语言参考
</a>
</li>
<li class="chapter " data-level="3.2" data-path="chapter3/02_Lexical_Structure.html">
<a href="./chapter3/02_Lexical_Structure.html">
<i class="fa fa-check"></i> <b>3.2.</b> 词法结构
</a>
</li>
<li class="chapter " data-level="3.3" data-path="chapter3/03_Types.html">
<a href="./chapter3/03_Types.html">
<i class="fa fa-check"></i> <b>3.3.</b> 类型
</a>
</li>
<li class="chapter " data-level="3.4" data-path="chapter3/04_Expressions.html">
<a href="./chapter3/04_Expressions.html">
<i class="fa fa-check"></i> <b>3.4.</b> 表达式
</a>
</li>
<li class="chapter " data-level="3.5" data-path="chapter3/05_Declarations.html">
<a href="./chapter3/05_Declarations.html">
<i class="fa fa-check"></i> <b>3.5.</b> 声明
</a>
</li>
<li class="chapter " data-level="3.6" data-path="chapter3/06_Attributes.html">
<a href="./chapter3/06_Attributes.html">
<i class="fa fa-check"></i> <b>3.6.</b> 属性
</a>
</li>
<li class="chapter " data-level="3.7" data-path="chapter3/07_Patterns.html">
<a href="./chapter3/07_Patterns.html">
<i class="fa fa-check"></i> <b>3.7.</b> 模式
</a>
</li>
<li class="chapter " data-level="3.8" data-path="chapter3/08_Generic_Parameters_and_Arguments.html">
<a href="./chapter3/08_Generic_Parameters_and_Arguments.html">
<i class="fa fa-check"></i> <b>3.8.</b> 泛型参数
</a>
</li>
<li class="chapter " data-level="3.9" data-path="chapter3/09_Summary_of_the_Grammar.html">
<a href="./chapter3/09_Summary_of_the_Grammar.html">
<i class="fa fa-check"></i> <b>3.9.</b> 语法总结
</a>
</li>
@ -219,26 +495,86 @@
<a href="./index.html" title="Introduction" class="chapter done new-chapter" data-progress="0" style="left: 0%;"></a>
<a href="./chapter1/README.html" title="欢迎使用 Swift" class="chapter new-chapter" data-progress="1" style="left: 14.285714285714286%;"></a>
<a href="./chapter1/chapter1.html" title="欢迎使用 Swift" class="chapter new-chapter" data-progress="1" style="left: 2.7027027027027026%;"></a>
<a href="./chapter1/swift.html" title="关于 Swift" class="chapter " data-progress="1.1" style="left: 28.571428571428573%;"></a>
<a href="./chapter1/01_swift.html" title="关于 Swift" class="chapter " data-progress="1.1" style="left: 5.405405405405405%;"></a>
<a href="./chapter1/a_swift_tour.html" title="Swift 初见" class="chapter " data-progress="1.2" style="left: 42.857142857142854%;"></a>
<a href="./chapter1/02_a_swift_tour.html" title="Swift 初见" class="chapter " data-progress="1.2" style="left: 8.108108108108109%;"></a>
<a href="./chapter2/the_basics.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 57.142857142857146%;"></a>
<a href="./chapter2/chapter2.html" title="Swift 教程" class="chapter new-chapter" data-progress="2" style="left: 10.81081081081081%;"></a>
<a href="./chapter2/article_1.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 71.42857142857143%;"></a>
<a href="./chapter2/01_The_Basics.html" title="基础部分" class="chapter " data-progress="2.1" style="left: 13.513513513513514%;"></a>
<a href="./chapter2/basic_operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 85.71428571428571%;"></a>
<a href="./chapter2/10_Properties.html" title="属性" class="chapter " data-progress="2.10" style="left: 16.216216216216218%;"></a>
<a href="./chapter2/strings_and_characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 100%;"></a>
<a href="./chapter2/11_Methods.html" title="方法" class="chapter " data-progress="2.11" style="left: 18.91891891891892%;"></a>
<a href="./chapter2/12_Subscripts.html" title="下标" class="chapter " data-progress="2.12" style="left: 21.62162162162162%;"></a>
<a href="./chapter2/13_Inheritance.html" title="继承" class="chapter " data-progress="2.13" style="left: 24.324324324324323%;"></a>
<a href="./chapter2/14_Initialization.html" title="构造函数" class="chapter " data-progress="2.14" style="left: 27.027027027027028%;"></a>
<a href="./chapter2/15_Deinitialization.html" title="析构函数" class="chapter " data-progress="2.15" style="left: 29.72972972972973%;"></a>
<a href="./chapter2/16_Automatic_Reference_Counting.html" title="自动引用计数" class="chapter " data-progress="2.16" style="left: 32.432432432432435%;"></a>
<a href="./chapter2/17_Optional_Chaining.html" title="可选链" class="chapter " data-progress="2.17" style="left: 35.13513513513514%;"></a>
<a href="./chapter2/18_Type_Casting.html" title="类型检查" class="chapter " data-progress="2.18" style="left: 37.83783783783784%;"></a>
<a href="./chapter2/19_Nested_Types.html" title="嵌套类型" class="chapter " data-progress="2.19" style="left: 40.54054054054054%;"></a>
<a href="./chapter2/02_Basic_Operators.html" title="基本操作符" class="chapter " data-progress="2.2" style="left: 43.24324324324324%;"></a>
<a href="./chapter2/20_Extensions.html" title="扩展" class="chapter " data-progress="2.20" style="left: 45.945945945945944%;"></a>
<a href="./chapter2/21_Protocols.html" title="接口" class="chapter " data-progress="2.21" style="left: 48.648648648648646%;"></a>
<a href="./chapter2/22_Generics.html" title="泛型" class="chapter " data-progress="2.22" style="left: 51.351351351351354%;"></a>
<a href="./chapter2/23_Advanced_Operators.html" title="高级操作符" class="chapter " data-progress="2.23" style="left: 54.054054054054056%;"></a>
<a href="./chapter2/03_Strings_and_Characters.html" title="字符串和字符" class="chapter " data-progress="2.3" style="left: 56.75675675675676%;"></a>
<a href="./chapter2/04_Collection_Types.html" title="集合类型" class="chapter " data-progress="2.4" style="left: 59.45945945945946%;"></a>
<a href="./chapter2/05_Control_Flow.html" title="控制流" class="chapter " data-progress="2.5" style="left: 62.16216216216216%;"></a>
<a href="./chapter2/06_Functions.html" title="函数" class="chapter " data-progress="2.6" style="left: 64.86486486486487%;"></a>
<a href="./chapter2/07_Closures.html" title="闭包" class="chapter " data-progress="2.7" style="left: 67.56756756756756%;"></a>
<a href="./chapter2/08_Enumerations.html" title="枚举" class="chapter " data-progress="2.8" style="left: 70.27027027027027%;"></a>
<a href="./chapter2/09_Classes_and_Structures.html" title="类和结构体" class="chapter " data-progress="2.9" style="left: 72.97297297297297%;"></a>
<a href="./chapter3/chapter3.html" title="语言参考" class="chapter new-chapter" data-progress="3" style="left: 75.67567567567568%;"></a>
<a href="./chapter3/01_About_the_Language_Reference.html" title="关于语言参考" class="chapter " data-progress="3.1" style="left: 78.37837837837837%;"></a>
<a href="./chapter3/02_Lexical_Structure.html" title="词法结构" class="chapter " data-progress="3.2" style="left: 81.08108108108108%;"></a>
<a href="./chapter3/03_Types.html" title="类型" class="chapter " data-progress="3.3" style="left: 83.78378378378379%;"></a>
<a href="./chapter3/04_Expressions.html" title="表达式" class="chapter " data-progress="3.4" style="left: 86.48648648648648%;"></a>
<a href="./chapter3/05_Declarations.html" title="声明" class="chapter " data-progress="3.5" style="left: 89.1891891891892%;"></a>
<a href="./chapter3/06_Attributes.html" title="属性" class="chapter " data-progress="3.6" style="left: 91.89189189189189%;"></a>
<a href="./chapter3/07_Patterns.html" title="模式" class="chapter " data-progress="3.7" style="left: 94.5945945945946%;"></a>
<a href="./chapter3/08_Generic_Parameters_and_Arguments.html" title="泛型参数" class="chapter " data-progress="3.8" style="left: 97.29729729729729%;"></a>
<a href="./chapter3/09_Summary_of_the_Grammar.html" title="语法总结" class="chapter " data-progress="3.9" style="left: 100%;"></a>
</div>
</div>
<div class="page-inner">
<section class="normal" id="section-gitbook_5">
<section class="normal" id="section-gitbook_4">
<h1 id="swift-">Swift 编程语言</h1>
<p>Swift 是苹果在 WWDC 2014 上发布的一款全新的编程语言，本书译自苹果官方的 Swift 教程《The Swift Programming Language》。</p>
@ -253,7 +589,7 @@
<a href="./chapter1/README.html" class="navigation navigation-next navigation-unique" aria-label="Next page: 欢迎使用 Swift"><i class="fa fa-angle-right"></i></a>
<a href="./chapter1/chapter1.html" class="navigation navigation-next navigation-unique" aria-label="Next page: 欢迎使用 Swift"><i class="fa fa-angle-right"></i></a>
</div>
</div>

46
manifest.appcache
View File

@ -1,15 +1,45 @@
CACHE MANIFEST
# Revision 1401919801866
# Revision 1401935155502
CACHE:
index.html
chapter1/README.html
chapter1/a_swift_tour.html
chapter1/swift.html
chapter2/article_1.html
chapter2/basic_operators.html
chapter2/strings_and_characters.html
chapter2/the_basics.html
chapter1/01_swift.html
chapter1/02_a_swift_tour.html
chapter1/chapter1.html
chapter2/13_Inheritance.html
chapter2/01_The_Basics.html
chapter2/03_Strings_and_Characters.html
chapter2/04_Collection_Types.html
chapter2/05_Control_Flow.html
chapter2/06_Functions.html
chapter2/07_Closures.html
chapter2/08_Enumerations.html
chapter2/09_Classes_and_Structures.html
chapter2/10_Properties.html
chapter2/11_Methods.html
chapter2/12_Subscripts.html
chapter2/02_Basic_Operators.html
chapter2/14_Initialization.html
chapter2/15_Deinitialization.html
chapter2/16_Automatic_Reference_Counting.html
chapter2/17_Optional_Chaining.html
chapter2/18_Type_Casting.html
chapter2/19_Nested_Types.html
chapter2/20_Extensions.html
chapter2/21_Protocols.html
chapter2/22_Generics.html
chapter2/23_Advanced_Operators.html
chapter2/chapter2.html
chapter3/01_About_the_Language_Reference.html
chapter3/02_Lexical_Structure.html
chapter3/03_Types.html
chapter3/04_Expressions.html
chapter3/05_Declarations.html
chapter3/06_Attributes.html
chapter3/07_Patterns.html
chapter3/08_Generic_Parameters_and_Arguments.html
chapter3/09_Summary_of_the_Grammar.html
chapter3/chapter3.html
gitbook/app.js
gitbook/fonts/anonymouspro/400.woff
gitbook/fonts/anonymouspro/400i.woff

2
search_index.json
View File

File diff suppressed because one or more lines are too long

42
source/SUMMARY.md
View File

@ -1,8 +1,40 @@
# Summary
* [欢迎使用 Swift](chapter1/README.md)
* [关于 Swift](chapter1/swift.md)
* [Swift 初见](chapter1/a_swift_tour.md)
* [Swift 教程](chapter2/the_basics.md)
* [基础部分](chapter2/article_1.md)
* [欢迎使用 Swift](chapter1/chapter1.md)
* [关于 Swift](chapter1/01_swift.md)
* [Swift 初见](chapter1/02_a_swift_tour.md)
* [Swift 教程](chapter2/chapter2.md)
* [基础部分](chapter2/01_The_Basics.md)
* [基本操作符](chapter2/02_Basic_Operators.md)
* [字符串和字符](chapter2/03_Strings_and_Characters.md)
* [集合类型](chapter2/04_Collection_Types.md)
* [控制流](chapter2/05_Control_Flow.md)
* [函数](chapter2/06_Functions.md)
* [闭包](chapter2/07_Closures.md)
* [枚举](chapter2/08_Enumerations.md)
* [类和结构体](chapter2/09_Classes_and_Structures.md)
* [属性](chapter2/10_Properties.md)
* [方法](chapter2/11_Methods.md)
* [下标](chapter2/12_Subscripts.md)
* [继承](chapter2/13_Inheritance.md)
* [构造函数](chapter2/14_Initialization.md)
* [析构函数](chapter2/15_Deinitialization.md)
* [自动引用计数](chapter2/16_Automatic_Reference_Counting.md)
* [可选链](chapter2/17_Optional_Chaining.md)
* [类型检查](chapter2/18_Type_Casting.md)
* [嵌套类型](chapter2/19_Nested_Types.md)
* [扩展](chapter2/20_Extensions.md)
* [接口](chapter2/21_Protocols.md)
* [泛型](chapter2/22_Generics.md)
* [高级操作符](chapter2/23_Advanced_Operators.md)
* [语言参考](chapter3/chapter3.md)
* [关于语言参考](chapter3/01_About_the_Language_Reference.md)
* [词法结构](chapter3/02_Lexical_Structure.md)
* [类型](chapter3/03_Types.md)
* [表达式](chapter3/04_Expressions.md)
* [声明](chapter3/05_Declarations.md)
* [属性](chapter3/06_Attributes.md)
* [模式](chapter3/07_Patterns.md)
* [泛型参数](chapter3/08_Generic_Parameters_and_Arguments.md)
* [语法总结](chapter3/09_Summary_of_the_Grammar.md)

0
source/chapter1/swift.md → source/chapter1/01_swift.md
View File

0
source/chapter1/a_swift_tour.md → source/chapter1/02_a_swift_tour.md
View File

0
source/chapter1/README.md → source/chapter1/chapter1.md
View File

30
source/chapter2/The_Basics.md → source/chapter2/01_The_Basics.md
View File

@ -59,9 +59,9 @@ Swift 是一个类型安全的语言，可选就是一个很好的例子。Swift
你可以用任何你喜欢的字符作为常量和变量名，包括Unicode字符：
let π = 3.14159
let 你好 = "你好世界"
let 🐶🐮 = "dogcow"
let π = 3.14159
let 你好 = "你好世界"
let 🐶🐮 = "dogcow"
常量与变量名不能包含数学符号，箭头，保留的(或者非法的)Unicode码位，连线与制表符。尽管常量与变量名中可以包含数字，但是它们不能以数字打头。
@ -71,35 +71,35 @@ Swift 是一个类型安全的语言，可选就是一个很好的例子。Swift
你可以更改现有的变量值为其他同类型的值，在下面的例子中，`friendlyWelcome`的值从`"Hello!"`改为了`"Bonjour!"`:
var friendlyWelcome = "Hello!"
friendlyWelcome = "Bonjour!"
// friendlyWelcome is now "Bonjour!"
var friendlyWelcome = "Hello!"
friendlyWelcome = "Bonjour!"
// friendlyWelcome is now "Bonjour!"
和变量不一样，常量的值一旦被确定以后就不能更改了。尝试这样做会在编译时报错：
let languageName = "Swift"
languageName = "Swift++"
// this is a compile-time error - languageName cannot be changed
let languageName = "Swift"
languageName = "Swift++"
// this is a compile-time error - languageName cannot be changed
### 输出常量和变量
你可以用`println`函数来输出当前常量或变量的值:
println(friendlyWelcome)
// prints "Bonjour!"
println(friendlyWelcome)
// prints "Bonjour!"
`println`是一个用来输出的全局函数，输出的内容会在最后带换行。如果你用Xcode，`println`将会输出内容到“console”面板上。(另一种函数叫`print`，唯一区别是在输出内容最后不会加入换行。)
`println`函数输出传入的`String`值：
println("This is a string")
// prints "This is a string"
println("This is a string")
// prints "This is a string"
像Cocoa里的`NSLog`函数一样，`println`函数可以输出更复杂的信息。这些信息可以包含当前常量和变量的值。
Swift用字符串插值（string interpolation）的方式把常量名或者变量名当做占位符加入到长字符串中，Swift会用当前常量或变量的值替换这些占位符。将常量或变量名放入反斜杠符加一对圆括号中`"\()"`：
println("The current value of friendlyWelcome is \(friendlyWelcome)")
// prints "The current value of friendlyWelcome is Bonjour!
println("The current value of friendlyWelcome is \(friendlyWelcome)")
// prints "The current value of friendlyWelcome is Bonjour!
> 注意：字符串插值所有可用的选项在 字符串插值 这章中讲述。

0
source/chapter2/02_Basic_Operators.md Normal file
View File

14
source/chapter2/Strings_and_Characters.md → source/chapter2/03_Strings_and_Characters.md
View File

@ -30,10 +30,10 @@ let someString = "Some string literal value"
字符串字面量可以包含以下特殊字符：
* 转移特殊字符 `\0` (空字符)、`\\`(反斜线)、`\t` (水平制表符)、`\n` (换行符)、`\r` (回车符)、`\"` (双引号)、`\'` (单引号)。
* 单字节 Unicode 标量，写成 `\xnn`，其中 nn 为两位十六进制数。
* 双字节 Unicode 标量，写成 `\unnnn`，其中 nnnn 为四位十六进制数。
* 四字节 Unicode 标量，写成 `\Unnnnnnnn`，其中 nnnnnnnn 为八位十六进制数。
* 转移特殊字符 `\0` (空字符)、`\\`(反斜线)、`\t` (水平制表符)、`\n` (换行符)、`\r` (回车符)、`\"` (双引号)、`\'` (单引号)。
* 单字节 Unicode 标量，写成 `\xnn`，其中 nn 为两位十六进制数。
* 双字节 Unicode 标量，写成 `\unnnn`，其中 nnnn 为四位十六进制数。
* 四字节 Unicode 标量，写成 `\Unnnnnnnn`，其中 nnnnnnnn 为八位十六进制数。
下面的代码为各种特殊字符的使用示例。
@ -268,9 +268,9 @@ Swift 提供了几种不同的方式来访问字符串的 Unicode 表示。
另外，能够以其他三种 Unicode 兼容的方式访问字符串的值：
* UTF-8 代码单元集合 (利用字符串的 `utf8` 属性进行访问)
* UTF-16 代码单元集合 (利用字符串的 `utf16` 属性进行访问)
* 21位的 Unicode 标量值集合 (利用字符串的 `unicodeScalars` 属性进行访问)
* UTF-8 代码单元集合 (利用字符串的 `utf8` 属性进行访问)
* UTF-16 代码单元集合 (利用字符串的 `utf16` 属性进行访问)
* 21位的 Unicode 标量值集合 (利用字符串的 `unicodeScalars` 属性进行访问)
下面由 `D` `o` `g` `!` 和 `🐶` (狗脸表情，Unicode 标量为 `U+1F436`)组成的字符串中的每一个字符代表着一种不同的表示：

0
source/chapter2/04_Collection_Types.md Normal file
View File

0
source/chapter2/05_Control_Flow.md Normal file
View File

26
source/chapter2/Functions.md → source/chapter2/06_Functions.md
View File

@ -14,19 +14,19 @@ Swift统一的函数语法足够灵活，可以用来表示任何函数，包括
在下面例子中的函数叫做`"greetingForPerson"`，之所以叫这个名字是因为这个函数用一个人的名字当做输入，并返回给这个人的问候语。为了完成这个任务，你定义一个输入参数-一个叫做`personName`的`String`值，和一个包含给这个人问候语的`String`类型的返回值：
func sayHello(personName: String) -> String {
let greeting = "Hello, " + personName + "!"
return greeting
}
func sayHello(personName: String) -> String {
let greeting = "Hello, " + personName + "!"
return greeting
}
所有的这些信息汇总起来成为函数的定义，并以`func`作为前缀。指定函数返回类型时，用返回箭头`->`（一个连字符后跟一个右尖括号）后跟返回类型的名称的方式来表示。
该定义描述了函数做什么，它期望接收什么和执行结束时它返回的结果是什么。这样的定义使的函数可以在别的地方以一种清晰的方式被调用：
println(sayHello("Anna"))
// prints "Hello, Anna!"
println(sayHello("Brian"))
// prints "Hello, Brian!
println(sayHello("Anna"))
// prints "Hello, Anna!"
println(sayHello("Brian"))
// prints "Hello, Brian!
调用`sayHello`函数时，在圆括号中传给它一个`String`类型的实参。因为这个函数返回一个`String`类型的值，`sayHello`可以被包含在`println`的调用中，用来输出这个函数的返回值，正如上面所示。
@ -36,10 +36,10 @@ Swift统一的函数语法足够灵活，可以用来表示任何函数，包括
为了简化这个函数的定义，可以将问候消息的创建和返回写成一句：
func sayHelloAgain(personName: String) -> String {
return "Hello again, " + personName + "!"
}
println(sayHelloAgain("Anna"))
// prints "Hello again, Anna!
func sayHelloAgain(personName: String) -> String {
return "Hello again, " + personName + "!"
}
println(sayHelloAgain("Anna"))
// prints "Hello again, Anna!
## 函数参数与返回值

0
source/chapter2/07_Closures.md Normal file
View File

0
source/chapter2/08_Enumerations.md Normal file
View File

0
source/chapter2/09_Classes_and_Structures.md Normal file
View File

0
source/chapter2/10_Properties.md Normal file
View File

0
source/chapter2/11_Methods.md Normal file
View File

0
source/chapter2/12_Subscripts.md Normal file
View File

0
source/chapter2/13_Inheritance.md Normal file
View File

0
source/chapter2/14_Initialization.md Normal file
View File

0
source/chapter2/15_Deinitialization.md Normal file
View File

0
source/chapter2/16_Automatic_Reference_Counting.md Normal file
View File

0
source/chapter2/17_Optional_Chaining.md Normal file
View File

0
source/chapter2/18_Type_Casting.md Normal file
View File

0
source/chapter2/19_Nested_Types.md Normal file
View File

0
source/chapter2/20_Extensions.md Normal file
View File

0
source/chapter2/21_Protocols.md Normal file
View File

0
source/chapter2/22_Generics.md Normal file
View File

0
source/chapter2/23_Advanced_Operators.md Normal file
View File

0
source/chapter2/the basics.md → source/chapter2/chapter2.md
View File

0
source/chapter3/01_About_the_Language_Reference.md Normal file
View File

0
source/chapter3/02_Lexical_Structure.md Normal file
View File

0
source/chapter3/03_Types.md Normal file
View File

0
source/chapter3/04_Expressions.md Normal file
View File

0
source/chapter3/05_Declarations.md Normal file
View File

0
source/chapter3/06_Attributes.md Normal file
View File

0
source/chapter3/07_Patterns.md Normal file
View File

0
source/chapter3/08_Generic_Parameters_and_Arguments.md Normal file
View File

0
source/chapter3/09_Summary_of_the_Grammar.md Normal file
View File

0
source/chapter3/chapter3.md Normal file
View File