correct 1 mistake in 02/01

chapter1/01_swift.html

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-    <div class="book"  data-level="1.1" data-basepath=".." data-revision="1402183329825">
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                         <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>

chapter1/02_a_swift_tour.html

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                         <h1 id="swift-">Swift 初见</h1>
 <p>本页内容包括：</p>

chapter1/chapter1.html

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                         <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>

chapter2/01_The_Basics.html

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                         <h1 id="-">基础部分</h1>
 <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>
@@ -849,7 +849,7 @@ println(&quot;The status message is \(http200Status.description)&quot;)
 <li>没有值</li>
 </ul>
 <blockquote>
-<p>注意：C 和 Objective-C 中并没有可选这个概念。最接近的是 Objective-C 中的一个特性，一个方法要不返回一个对象要不返回<code>nil</code>，<code>nil</code>表示“缺少一个合法的对象”。然而，这只对对象起作用——对于结构体，基本的 C 类型或者美剧类型不起作用。对于这些类型，Objective-C 方法一般会返回一个特殊值（比如<code>NSNotFound</code>）来暗示值缺失。这种方法假设方法的调用者知道并记得对特殊值进行判断。然而，Swift 的可选可以让你暗示任意类型的值缺失，并不需要一个特殊值。</p>
+<p>注意：C 和 Objective-C 中并没有可选这个概念。最接近的是 Objective-C 中的一个特性，一个方法要不返回一个对象要不返回<code>nil</code>，<code>nil</code>表示“缺少一个合法的对象”。然而，这只对对象起作用——对于结构体，基本的 C 类型或者枚举类型不起作用。对于这些类型，Objective-C 方法一般会返回一个特殊值（比如<code>NSNotFound</code>）来暗示值缺失。这种方法假设方法的调用者知道并记得对特殊值进行判断。然而，Swift 的可选可以让你暗示任意类型的值缺失，并不需要一个特殊值。</p>
 </blockquote>
 <p>来看一个例子。Swift 的<code>String</code>类型有一个叫做<code>toInt</code>的方法，作用是将一个<code>String</code>值转换成一个<code>Int</code>值。然而，并不是所有的字符串都可以转换成一个整数。字符串<code>&quot;123&quot;</code>可以被转换成数字<code>123</code>，但是字符串<code>&quot;hello, world&quot;</code>不行。</p>
 <p>下面的例子使用<code>toInt</code>方法来尝试将一个<code>String</code>转换成<code>Int</code>：</p>

chapter2/02_Basic_Operators.html

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                         <h1 id="-">基础运算符</h1>
 <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>&amp;&amp;</code>(如 <code>if enteredDoorCode &amp;&amp; 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>

chapter2/03_Strings_and_Characters.html

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                         <h1 id="-strings-and-characters-">字符串和字符 (Strings and Characters)</h1>
 <p>本页包含内容：</p>

chapter2/04_Collection_Types.html

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chapter2/05_Control_Flow.html

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chapter2/06_Functions.html

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                         <h1 id="-functions-">函数（Functions）</h1>
 <p>本页包含内容：</p>

chapter2/07_Closures.html

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                         <h1 id="-">闭包</h1>
 <p>本页内容包含：</p>

chapter2/08_Enumerations.html

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chapter2/09_Classes_and_Structures.html

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                         <h3 id="-">类和结构体</h3>
 <p>本页包含内容：</p>

chapter2/10_Properties.html

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chapter2/11_Methods.html

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chapter2/12_Subscripts.html

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chapter2/14_Initialization.html

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chapter2/16_Automatic_Reference_Counting.html

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                         <h1 id="-">自动引用计数</h1>
 <p>本页包含内容：</p>

chapter2/17_Optional_Chaining.html

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chapter2/18_Type_Casting.html

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                         <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。）

chapter2/19_Nested_Types.html

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                         <h1 id="-">类型嵌套</h1>
 <p>本页包含内容：</p>

chapter2/20_Extensions.html

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chapter2/21_Protocols.html

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chapter2/22_Generics.html

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                         <h1 id="-">泛型</h1>
 <hr>

chapter2/23_Advanced_Operators.html

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chapter2/chapter2.html

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                         <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>

chapter3/01_About_the_Language_Reference.html

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                         <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>

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chapter3/03_Types.html

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chapter3/04_Expressions.html

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                         <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>

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