correct the wrong '3'
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<div class="book" data-level="1.1" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="1.1" data-basepath=".." data-revision="1402235469937">
|
||||||
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<div class="book-header">
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||||||
<!-- Actions Left -->
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<!-- Actions Left -->
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||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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<section class="normal" id="section-gitbook_5">
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<section class="normal" id="section-gitbook_62">
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||||||
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||||||
<h1 id="-swift">关于 Swift</h1>
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<h1 id="-swift">关于 Swift</h1>
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||||||
<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>
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<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>
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<div class="book" data-level="1.2" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="1.2" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
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||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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<div class="page-inner">
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<h1 id="swift-">Swift 初见</h1>
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<h1 id="swift-">Swift 初见</h1>
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<p>本页内容包括:</p>
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<p>本页内容包括:</p>
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<div class="book" data-level="1" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="1" data-basepath=".." data-revision="1402235469937">
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<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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<section class="normal" id="section-gitbook_6">
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<section class="normal" id="section-gitbook_64">
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||||||
<h1 id="-swift">欢迎使用 Swift</h1>
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<h1 id="-swift">欢迎使用 Swift</h1>
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<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>
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<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>
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<div class="book" data-level="2.1" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.1" data-basepath=".." data-revision="1402235469937">
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||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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<div class="page-inner">
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<section class="normal" id="section-gitbook_9">
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<section class="normal" id="section-gitbook_66">
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<h1 id="-">基础部分</h1>
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<h1 id="-">基础部分</h1>
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<p>Swift 是 iOS 和 OS X 应用开发的一门新语言。然而,如果你有 C 或者 Objective-C 开发经验的话,你会发现 Swift 的很多内容都是你熟悉的。</p>
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<p>Swift 是 iOS 和 OS X 应用开发的一门新语言。然而,如果你有 C 或者 Objective-C 开发经验的话,你会发现 Swift 的很多内容都是你熟悉的。</p>
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@ -780,7 +780,7 @@ let pi = Double(three) + pointOneFourOneFiveNine
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<p>浮点数转换为整数也一样,整数类型可以用<code>Double</code>或者<code>Float</code>类型来初始化:</p>
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<p>浮点数转换为整数也一样,整数类型可以用<code>Double</code>或者<code>Float</code>类型来初始化:</p>
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<pre><code>let integerPi = Int(pi)
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<pre><code>let integerPi = Int(pi)
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// integerPi 等于 3,所以被推测为 Int 类型
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// integerPi 等于 3,所以被推测为 Int 类型
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</code></pre><p>当用这种方式来初始化一个新的整数值时,浮点值会被截断。也就是说<code>4.75</code>会变成<code>4</code>,<code>-3.9</code>会变成<code>3</code>。</p>
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</code></pre><p>当用这种方式来初始化一个新的整数值时,浮点值会被截断。也就是说<code>4.75</code>会变成<code>4</code>,<code>-3.9</code>会变成<code>-3</code>。</p>
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<blockquote>
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<blockquote>
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<p>注意:结合数字类常量和变量不同于结合数字类原始值。原始值<code>3</code>可以直接和原始值<code>0.14159</code>相加,因为数字原始值本身没有明确的类型。它们的类型只在编译器需要求值的时候被推测。</p>
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<p>注意:结合数字类常量和变量不同于结合数字类原始值。原始值<code>3</code>可以直接和原始值<code>0.14159</code>相加,因为数字原始值本身没有明确的类型。它们的类型只在编译器需要求值的时候被推测。</p>
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</blockquote>
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</blockquote>
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<div class="book" data-level="2.2" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.2" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
@ -587,7 +587,7 @@
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|||||||
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||||||
<div class="page-inner">
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||||||
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||||||
<section class="normal" id="section-gitbook_31">
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<section class="normal" id="section-gitbook_88">
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||||||
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||||||
<h1 id="-">基础运算符</h1>
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<h1 id="-">基础运算符</h1>
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<p>运算符是检查, 改变, 合并值的特殊符号或短语. 例如, 加号 <code>+</code> 把计算两个数的和(如 <code>let i = 1 + 2</code>). 复杂些的运行算包括逻辑与<code>&&</code>(如 <code>if enteredDoorCode && passedRetinaScan</code>), 还有自增运算符 <code>++i</code> 这样让自身加一的便捷运算.</p>
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<p>运算符是检查, 改变, 合并值的特殊符号或短语. 例如, 加号 <code>+</code> 把计算两个数的和(如 <code>let i = 1 + 2</code>). 复杂些的运行算包括逻辑与<code>&&</code>(如 <code>if enteredDoorCode && passedRetinaScan</code>), 还有自增运算符 <code>++i</code> 这样让自身加一的便捷运算.</p>
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<div class="book" data-level="2.3" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.3" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
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|||||||
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||||||
<div class="page-inner">
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||||||
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||||||
<section class="normal" id="section-gitbook_10">
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<section class="normal" id="section-gitbook_67">
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||||||
|
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||||||
<h1 id="-strings-and-characters-">字符串和字符 (Strings and Characters)</h1>
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<h1 id="-strings-and-characters-">字符串和字符 (Strings and Characters)</h1>
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||||||
<p>本页包含内容:</p>
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<p>本页包含内容:</p>
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||||||
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<div class="book" data-level="2.4" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.4" data-basepath=".." data-revision="1402235469937">
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||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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|||||||
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|||||||
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||||||
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<div class="book" data-level="2.5" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.5" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
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|||||||
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|||||||
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||||||
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<div class="book" data-level="2.6" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.6" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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<!-- Actions Left -->
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||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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|||||||
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||||||
<div class="page-inner">
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||||||
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||||||
<section class="normal" id="section-gitbook_24">
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<section class="normal" id="section-gitbook_81">
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||||||
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||||||
<h1 id="-functions-">函数(Functions)</h1>
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<h1 id="-functions-">函数(Functions)</h1>
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||||||
<p>本页包含内容:</p>
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<p>本页包含内容:</p>
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||||||
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|||||||
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|||||||
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||||||
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<div class="book" data-level="2.7" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.7" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
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|||||||
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||||||
<div class="page-inner">
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||||||
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||||||
<section class="normal" id="section-gitbook_25">
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<section class="normal" id="section-gitbook_82">
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||||||
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||||||
<h1 id="-">闭包</h1>
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<h1 id="-">闭包</h1>
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||||||
<p>本页内容包含:</p>
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<p>本页内容包含:</p>
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||||||
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<div class="book" data-level="2.8" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.8" data-basepath=".." data-revision="1402235469937">
|
||||||
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|
<div class="book-header">
|
||||||
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||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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|||||||
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|||||||
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||||||
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<div class="book" data-level="2.9" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.9" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
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|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
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|||||||
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||||||
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||||||
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||||||
<section class="normal" id="section-gitbook_27">
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<section class="normal" id="section-gitbook_84">
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||||||
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||||||
<h3 id="-">类和结构体</h3>
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<h3 id="-">类和结构体</h3>
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||||||
<p>本页包含内容:</p>
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<p>本页包含内容:</p>
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||||||
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|||||||
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|||||||
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||||||
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<div class="book" data-level="2.10" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.10" data-basepath=".." data-revision="1402235469937">
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||||||
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|
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|
||||||
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||||||
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||||||
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|||||||
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|||||||
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||||||
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<div class="book" data-level="2.11" data-basepath=".." data-revision="1402225140868">
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<div class="book" data-level="2.11" data-basepath=".." data-revision="1402235469937">
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||||||
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|
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|
||||||
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|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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||||||
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<div class="book" data-level="2.12" data-basepath=".." data-revision="1402225140868">
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|
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|
||||||
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||||||
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||||||
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<div class="book" data-level="2.13" data-basepath=".." data-revision="1402225140868">
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||||||
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|
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|
||||||
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||||||
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|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
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|
||||||
<h1 id="-">继承</h1>
|
<h1 id="-">继承</h1>
|
||||||
<p>一个类可以继承另一个类的方法,属性和其它特性。当一个类继承其它类,继承类叫子类,被继承类叫超类(或父类)。在Swift中,继承是区分「类」与其它类型的一个基本特征。</p>
|
<p>一个类可以继承另一个类的方法,属性和其它特性。当一个类继承其它类,继承类叫子类,被继承类叫超类(或父类)。在Swift中,继承是区分「类」与其它类型的一个基本特征。</p>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.14" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.14" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.15" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.15" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_33">
|
<section class="normal" id="section-gitbook_90">
|
||||||
|
|
||||||
<h1 id="-">析构过程</h1>
|
<h1 id="-">析构过程</h1>
|
||||||
<p>在一个类的实例被释放之前,析构函数被立即调用。用关键字deinit来标示析构函数,类似于初始化函数用init来标示。析构函数只适用于类类型。</p>
|
<p>在一个类的实例被释放之前,析构函数被立即调用。用关键字deinit来标示析构函数,类似于初始化函数用init来标示。析构函数只适用于类类型。</p>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.16" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.16" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_34">
|
<section class="normal" id="section-gitbook_91">
|
||||||
|
|
||||||
<h1 id="-">自动引用计数</h1>
|
<h1 id="-">自动引用计数</h1>
|
||||||
<p>本页包含内容:</p>
|
<p>本页包含内容:</p>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.17" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.17" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_35">
|
<section class="normal" id="section-gitbook_92">
|
||||||
|
|
||||||
<h1 id="optional-chaining">Optional Chaining</h1>
|
<h1 id="optional-chaining">Optional Chaining</h1>
|
||||||
<p>可选链(Optional Chaining)是一种可以请求和调用属性、方法及子脚本的过程,它的自判断性体现于请求或调用的目标当前可能为空(<code>nil</code>)。如果自判断的目标有值,那么调用就会成功;相反,如果选择的目标为空(<code>nil</code>),则这种调用将返回空(<code>nil</code>)。多次请求或调用可以被链接在一起形成一个链,如果任何一个节点为空(<code>nil</code>)将导致整个链失效。</p>
|
<p>可选链(Optional Chaining)是一种可以请求和调用属性、方法及子脚本的过程,它的自判断性体现于请求或调用的目标当前可能为空(<code>nil</code>)。如果自判断的目标有值,那么调用就会成功;相反,如果选择的目标为空(<code>nil</code>),则这种调用将返回空(<code>nil</code>)。多次请求或调用可以被链接在一起形成一个链,如果任何一个节点为空(<code>nil</code>)将导致整个链失效。</p>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.18" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.18" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_36">
|
<section class="normal" id="section-gitbook_93">
|
||||||
|
|
||||||
<h1 id="-type-casting-">类型检查(Type Casting)</h1>
|
<h1 id="-type-casting-">类型检查(Type Casting)</h1>
|
||||||
<p>(ps:为了方便各位检验所以保留了英文,可删。)
|
<p>(ps:为了方便各位检验所以保留了英文,可删。)
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.19" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.19" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_37">
|
<section class="normal" id="section-gitbook_94">
|
||||||
|
|
||||||
<h1 id="-">类型嵌套</h1>
|
<h1 id="-">类型嵌套</h1>
|
||||||
<p>本页包含内容:</p>
|
<p>本页包含内容:</p>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.20" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.20" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_38">
|
<section class="normal" id="section-gitbook_95">
|
||||||
|
|
||||||
<h1 id="-extensions-">扩展(Extensions)</h1>
|
<h1 id="-extensions-">扩展(Extensions)</h1>
|
||||||
<hr>
|
<hr>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.21" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.21" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.22" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.22" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_41">
|
<section class="normal" id="section-gitbook_98">
|
||||||
|
|
||||||
<h1 id="-">泛型</h1>
|
<h1 id="-">泛型</h1>
|
||||||
<hr>
|
<hr>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2.23" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2.23" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="2" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="2" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_45">
|
<section class="normal" id="section-gitbook_102">
|
||||||
|
|
||||||
<h1 id="swift-">Swift 教程</h1>
|
<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>
|
<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>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.1" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.1" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -587,7 +587,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_47">
|
<section class="normal" id="section-gitbook_104">
|
||||||
|
|
||||||
<h1 id="-">关于语言附注</h1>
|
<h1 id="-">关于语言附注</h1>
|
||||||
<p>本书的这一节描述了Swift编程语言的形式语法。这里描述的语法是为了帮助您更详细的了解该语言,而不是让您直接实现一个解析器或编译器。</p>
|
<p>本书的这一节描述了Swift编程语言的形式语法。这里描述的语法是为了帮助您更详细的了解该语言,而不是让您直接实现一个解析器或编译器。</p>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.2" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.2" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.3" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.3" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.4" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.4" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.6" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.6" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.7" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.7" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.8" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.8" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
<div class="book" data-level="3.9" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.9" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -44,7 +44,7 @@
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|||||||
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||||||
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||||||
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|
||||||
<div class="book" data-level="3.10" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.10" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
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|
||||||
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||||||
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||||||
<div class="book" data-level="3.5" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3.5" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -46,7 +46,7 @@
|
|||||||
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|
||||||
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|
||||||
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|
||||||
<div class="book" data-level="3" data-basepath=".." data-revision="1402225140868">
|
<div class="book" data-level="3" data-basepath=".." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
|
|||||||
@ -44,7 +44,7 @@
|
|||||||
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|
||||||
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|
||||||
|
|
||||||
<div class="book" data-level="0" data-basepath="." data-revision="1402225140868">
|
<div class="book" data-level="0" data-basepath="." data-revision="1402235469937">
|
||||||
<div class="book-header">
|
<div class="book-header">
|
||||||
<!-- Actions Left -->
|
<!-- Actions Left -->
|
||||||
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
|
||||||
@ -585,7 +585,7 @@
|
|||||||
|
|
||||||
<div class="page-inner">
|
<div class="page-inner">
|
||||||
|
|
||||||
<section class="normal" id="section-gitbook_4">
|
<section class="normal" id="section-gitbook_61">
|
||||||
|
|
||||||
<h1 id="swift-">Swift 编程语言</h1>
|
<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>
|
<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>
|
||||||
|
|||||||
@ -1,12 +1,12 @@
|
|||||||
CACHE MANIFEST
|
CACHE MANIFEST
|
||||||
# Revision 1402225140869
|
# Revision 1402235469938
|
||||||
|
|
||||||
CACHE:
|
CACHE:
|
||||||
index.html
|
index.html
|
||||||
chapter1/01_swift.html
|
chapter1/01_swift.html
|
||||||
|
chapter1/02_a_swift_tour.html
|
||||||
chapter1/chapter1.html
|
chapter1/chapter1.html
|
||||||
chapter2/13_Inheritance.html
|
chapter2/13_Inheritance.html
|
||||||
chapter1/02_a_swift_tour.html
|
|
||||||
chapter2/01_The_Basics.html
|
chapter2/01_The_Basics.html
|
||||||
chapter2/03_Strings_and_Characters.html
|
chapter2/03_Strings_and_Characters.html
|
||||||
chapter2/04_Collection_Types.html
|
chapter2/04_Collection_Types.html
|
||||||
@ -77,8 +77,8 @@ gitbook/jsrepl/sandbox.html
|
|||||||
gitbook/jsrepl/sandbox.js
|
gitbook/jsrepl/sandbox.js
|
||||||
gitbook/print.css
|
gitbook/print.css
|
||||||
gitbook/style.css
|
gitbook/style.css
|
||||||
gitbook/plugins/gitbook-plugin-mathjax/plugin.js
|
|
||||||
gitbook/plugins/gitbook-plugin-mixpanel/plugin.js
|
gitbook/plugins/gitbook-plugin-mixpanel/plugin.js
|
||||||
|
gitbook/plugins/gitbook-plugin-mathjax/plugin.js
|
||||||
|
|
||||||
NETWORK:
|
NETWORK:
|
||||||
*
|
*
|
||||||
File diff suppressed because one or more lines are too long
@ -284,7 +284,7 @@ Swift 是类型安全的,会在编译你的代码时进行类型检查,如
|
|||||||
let integerPi = Int(pi)
|
let integerPi = Int(pi)
|
||||||
// integerPi 等于 3,所以被推测为 Int 类型
|
// integerPi 等于 3,所以被推测为 Int 类型
|
||||||
|
|
||||||
当用这种方式来初始化一个新的整数值时,浮点值会被截断。也就是说`4.75`会变成`4`,`-3.9`会变成`3`。
|
当用这种方式来初始化一个新的整数值时,浮点值会被截断。也就是说`4.75`会变成`4`,`-3.9`会变成`-3`。
|
||||||
|
|
||||||
> 注意:结合数字类常量和变量不同于结合数字类原始值。原始值`3`可以直接和原始值`0.14159`相加,因为数字原始值本身没有明确的类型。它们的类型只在编译器需要求值的时候被推测。
|
> 注意:结合数字类常量和变量不同于结合数字类原始值。原始值`3`可以直接和原始值`0.14159`相加,因为数字原始值本身没有明确的类型。它们的类型只在编译器需要求值的时候被推测。
|
||||||
|
|
||||||
|
|||||||
Reference in New Issue
Block a user