From 5a02c1bd84485e34d32513acdf99b85a0de1c266 Mon Sep 17 00:00:00 2001 From: numbbbbb Date: Thu, 12 Jun 2014 13:21:55 +0800 Subject: [PATCH] make gitbook --- chapter1/01_swift.html | 14 +-- chapter1/02_a_swift_tour.html | 12 +-- chapter1/chapter1.html | 10 +- chapter2/01_The_Basics.html | 11 ++- chapter2/02_Basic_Operators.html | 10 +- chapter2/03_Strings_and_Characters.html | 14 +-- chapter2/04_Collection_Types.html | 16 +-- chapter2/05_Control_Flow.html | 18 ++-- chapter2/06_Functions.html | 12 +-- chapter2/07_Closures.html | 18 ++-- chapter2/08_Enumerations.html | 10 +- chapter2/09_Classes_and_Structures.html | 10 +- chapter2/10_Properties.html | 10 +- chapter2/11_Methods.html | 12 +-- chapter2/12_Subscripts.html | 14 +-- chapter2/13_Inheritance.html | 10 +- chapter2/14_Initialization.html | 10 +- chapter2/15_Deinitialization.html | 10 +- chapter2/16_Automatic_Reference_Counting.html | 10 +- chapter2/17_Optional_Chaining.html | 10 +- chapter2/18_Type_Casting.html | 10 +- chapter2/19_Nested_Types.html | 10 +- chapter2/20_Extensions.html | 10 +- chapter2/21_Protocols.html | 10 +- chapter2/22_Generics.html | 10 +- chapter2/23_Advanced_Operators.html | 10 +- chapter2/chapter2.html | 10 +- chapter3/01_About_the_Language_Reference.html | 10 +- chapter3/02_Lexical_Structure.html | 10 +- chapter3/03_Types.html | 10 +- chapter3/04_Expressions.html | 10 +- chapter3/05_Declarations.html | 10 +- chapter3/06_Attributes.html | 10 +- chapter3/07_Patterns.html | 10 +- .../08_Generic_Parameters_and_Arguments.html | 10 +- chapter3/09_Summary_of_the_Grammar.html | 10 +- chapter3/10_Statements.html | 99 +++++++++---------- chapter3/chapter3.html | 8 +- index.html | 15 +-- manifest.appcache | 2 +- search_index.json | 2 +- 41 files changed, 264 insertions(+), 263 deletions(-) diff --git a/chapter1/01_swift.html b/chapter1/01_swift.html index 90d6f90a5..607b85fe6 100644 --- a/chapter1/01_swift.html +++ b/chapter1/01_swift.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
+
@@ -98,7 +98,7 @@

- 这一次，让中国和世界同步 + Swift 编程语言

@@ -587,7 +587,7 @@

-
+

翻译：numbbbbb

@@ -595,11 +595,11 @@

关于 Swift

-

Swift 是一种新的编程语言，用于编写 iOS 和 OS X 应用。Swift 结合了 C 和 Objective-C 的优点并且不受C兼容性的限制。Swift 采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，更灵活，也更有趣。Swift 是基于成熟而且倍受喜爱得 Cocoa 和 Cocoa Touch 框架，他的降临将重新定义软件开发。

+

Swift 是一种新的编程语言，用于编写 iOS 和 OS X 应用。Swift 结合了 C 和 Objective-C 的优点并且不受C兼容性的限制。Swift 采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，更灵活，也更有趣。Swift 是基于成熟而且倍受喜爱的 Cocoa 和 Cocoa Touch 框架，他的降临将重新定义软件开发。

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。正是得益于这些基础工作，我们现在才能发布这样一个用于未来苹果软件开发的新语言。

Objective-C 开发者对 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。

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。

-

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，也可以用于开发一套完整的操作系统。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。

+

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 既可以用于开发“hello, world”这样的小程序，也可以用于开发一套完整的操作系统。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。

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！

diff --git a/chapter1/02_a_swift_tour.html b/chapter1/02_a_swift_tour.html index 56de722eb..7e298cb5a 100644 --- a/chapter1/02_a_swift_tour.html +++ b/chapter1/02_a_swift_tour.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
+
@@ -98,7 +98,7 @@

- 这一次，让中国和世界同步 + Swift 编程语言

@@ -587,7 +587,7 @@

-
+

翻译：numbbbbb @@ -811,7 +811,7 @@

函数和闭包

} var numbers = [20, 19, 7, 12] hasAnyMatches(numbers, lessThanTen) -

函数实际上是一种特殊的闭包，你可以使用{}来创建一个匿名闭包。使用in来分割参数并返回类型。

+

函数实际上是一种特殊的闭包，你可以使用{}来创建一个匿名闭包。使用in将参数和返回值类型声明与闭包函数体进行分离。

numbers.map({
     (number: Int) -> Int in
     let result = 3 * number
diff --git a/chapter1/chapter1.html b/chapter1/chapter1.html
index a4045b557..e2ceb0387 100644
--- a/chapter1/chapter1.html
+++ b/chapter1/chapter1.html
@@ -21,8 +21,8 @@
         
         
 
-        
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+        
+        
         
         
 
@@ -46,7 +46,7 @@
 
 
         
-    

+    

     

     
     
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-        这一次，让中国和世界同步
+        Swift 编程语言
     

 

 
@@ -587,7 +587,7 @@ 

 
                 

                 
-                    

+                    

                     
                         
欢迎使用 Swift

 
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。

diff --git a/chapter2/01_The_Basics.html b/chapter2/01_The_Basics.html
index 06a42f3bc..7ee76f4c5 100644
--- a/chapter2/01_The_Basics.html
+++ b/chapter2/01_The_Basics.html
@@ -21,8 +21,8 @@
         
         
 
-        
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+        
+        
         
         
 
@@ -46,7 +46,7 @@
 
 
         
-    

+    

     

     
     
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-        这一次，让中国和世界同步
+        Swift 编程语言
     

 

 
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-                    

+                    

                     
                         

 
翻译：numbbbbb, lyuka, JaySurplus

@@ -923,6 +923,7 @@ 
if 语句以及强制解析

 
注意：

 
使用!来获取一个不存在的可选值会导致运行时错误。使用!来强制解析值之前，一定要确定可选包含一个非nil的值。

 

+

 
可选绑定

 
使用可选绑定（optional binding）来判断可选是否包含值，如果包含就把值赋给一个临时常量或者变量。可选绑定可以用在if和while语句中来对可选的值进行判断并把值赋给一个常量或者变量。if和while语句，请参考控制流。

 
像下面这样在if语句中写一个可选绑定：

diff --git a/chapter2/02_Basic_Operators.html b/chapter2/02_Basic_Operators.html
index a5c126fd4..4979bda4d 100644
--- a/chapter2/02_Basic_Operators.html
+++ b/chapter2/02_Basic_Operators.html
@@ -21,8 +21,8 @@
         
         
 
-        
-        
+        
+        
         
         
 
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-    

+    

     

     
     
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-        这一次，让中国和世界同步
+        Swift 编程语言
     

 

 
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-                    

+                    

                     
                         

 
翻译：xielingwang

diff --git a/chapter2/03_Strings_and_Characters.html b/chapter2/03_Strings_and_Characters.html
index 97fb46bef..4f6c9f88d 100644
--- a/chapter2/03_Strings_and_Characters.html
+++ b/chapter2/03_Strings_and_Characters.html
@@ -21,8 +21,8 @@
         
         
 
-        
-        
+        
+        
         
         
 
@@ -46,7 +46,7 @@
 
 
         
-    

+    

     

     
     
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-        这一次，让中国和世界同步
+        Swift 编程语言
     

 

 
@@ -587,7 +587,7 @@ 

 
                 

                 
-                    

+                    

                     
                         

 
翻译：wh1100717

@@ -609,7 +609,7 @@ 
字符串和字符（Strings and Characters）
 
  • 字符串大小写
    • 
 
  • Unicode
    • 
 
-
    String是例如“hello, world“”，“海贼王” 这样的有序的Character（字符）类型的值的集合，通过String类型来表示。
    
+
    String是例如“hello, world”，“海贼王” 这样的有序的Character（字符）类型的值的集合，通过String类型来表示。
    
 
    Swift 的String和Character类型提供了一个快速的，兼容 Unicode 的方式来处理代码中的文本信息。
 创建和操作字符串的语法与 C 语言中字符串操作相似，轻量并且易读。
 字符串连接操作只需要简单地通过+号将两个字符串相连即可。
@@ -751,7 +751,7 @@ 
    字符串插值 (String Interpolation)
    
 在这个例子中，表达式写为\(Double(multiplier) * 2.5)并包含在字符串字面量中。
    
 
    
 
    注意：
    
-
    您插值字符串中写在括号中的表达式不能包含非转义双引号 (") 和反斜杠 (\)，并且不能包含回车或换行符。
    
+
    插值字符串中写在括号中的表达式不能包含非转义双引号 (") 和反斜杠 (\)，并且不能包含回车或换行符。
    
 
    
 
    
 
    比较字符串 (Comparing Strings)
    
diff --git a/chapter2/04_Collection_Types.html b/chapter2/04_Collection_Types.html
index 04527f7d4..be9e24328 100644
--- a/chapter2/04_Collection_Types.html
+++ b/chapter2/04_Collection_Types.html
@@ -21,8 +21,8 @@
         
         
 
-        
-        
+        
+        
         
         
 
@@ -46,7 +46,7 @@
 
 
         
-    
    
+    
    
     
    
     
     
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-        这一次，让中国和世界同步
+        Swift 编程语言
     
    
 
    
 
@@ -587,9 +587,13 @@ 
    
 
                 
    
                 
-                    
    
+                    
    
                     
-                        
    集合类型 (Collection Types)
    
+                        
    
+
    翻译：zqp
    
+
    校对：shinyzhu
    
+
    
+
    集合类型 (Collection Types)
    
 
    
 
    本页包含内容：
    
 
      
diff --git a/chapter2/05_Control_Flow.html b/chapter2/05_Control_Flow.html
index 8f2146898..d0cb32a35 100644
--- a/chapter2/05_Control_Flow.html
+++ b/chapter2/05_Control_Flow.html
@@ -21,8 +21,8 @@
         
         
 
-        
-        
+        
+        
         
         
 
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+        Swift 编程语言
     
      
 
      
 
@@ -587,10 +587,10 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
-
      翻译：vclwei, @coverxit, @NicePiao
      
+
      翻译：vclwei, coverxit, NicePiao
      
 
      校对：coverxit
      
 
      
 
      控制流
      
@@ -599,10 +599,8 @@ 
      控制流
      
 
 
      Swift提供了类似 C 语言的流程控制结构，包括可以多次执行任务的for和while循环，基于特定条件选择执行不同代码分支的if和switch语句，还有控制流程跳转到其他代码的break和continue语句。
      
 
      除了 C 语言里面传统的for条件递增（for-condition-increment）循环，Swift 还增加了for-in循环，用来更简单地遍历数组（array），字典（dictionary），区间（range），字符串（string）和其他序列类型。
      
diff --git a/chapter2/06_Functions.html b/chapter2/06_Functions.html
index ff2e636bd..7850321b5 100644
--- a/chapter2/06_Functions.html
+++ b/chapter2/06_Functions.html
@@ -21,8 +21,8 @@
         
         
 
-        
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+        Swift 编程语言
     
      
 
      
 
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+                    
      
                     
                         
      
 
      翻译：honghaoz
      
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      输入输出参数（In-Out Parameters）
      
 
      你只能传入一个变量作为输入输出参数。你不能传入常量或者字面量（literal value），因为这些量是不能被修改的。当传入的参数作为输入输出参数时，需要在参数前加&符，表示这个值可以被函数修改。
      
 
      
 
      注意：
      
-
      输入输出参数不能有默认值，而且变量参数不能用 inout 标记。如果你用 inout 标记一个参数，这个参数不能别 var 或者 let 标记。
      
+
      输入输出参数不能有默认值，而且可变参数不能用 inout 标记。如果你用 inout 标记一个参数，这个参数不能被 var 或者 let 标记。
      
 
      
 
      下面是例子，swapTwoInts 函数，有两个分别叫做 a 和 b 的输出输出参数：
      
 
      func swapTwoInts(inout a: Int, inout b: Int) {
diff --git a/chapter2/07_Closures.html b/chapter2/07_Closures.html
index 8e829af9b..ebd686cfa 100644
--- a/chapter2/07_Closures.html
+++ b/chapter2/07_Closures.html
@@ -21,8 +21,8 @@
         
         
 
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+        Swift 编程语言
     
      
 
      
 
@@ -587,7 +587,7 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
 
      翻译：wh1100717
      
@@ -610,7 +610,7 @@ 
      闭包（Closures）
      
 
      注意：
      
 
      如果您不熟悉捕获（capturing）这个概念也不用担心，您可以在 值捕获 章节对其进行详细了解。
      
 
      
-
      在函数 章节中介绍的全局和嵌套函数实际上也是特殊的闭包，闭包采取如下三种形式之一：
      
+
      在函数 章节中介绍的全局和嵌套函数实际上也是特殊的闭包，闭包采取如下三种形式之一：
      
 
        
 
      • 全局函数是一个有名字但不会捕获任何值的闭包
        • 
 
      • 嵌套函数是一个有名字并可以捕获其封闭函数域内值的闭包
        • 
@@ -625,8 +625,7 @@ 
        闭包（Closures）
        
 
      
 
      
 
      闭包表达式（Closure Expressions）
      
-
      嵌套函数 是一个在较复杂函数中方便进行命名和定义自包含代码模块的方式。
-当然，有时候撰写小巧的没有完整定义和命名的类函数结构也是很有用处的，尤其是在您处理一些函数并需要将另外一些函数作为该函数的参数时。
      
+
      嵌套函数 是一个在较复杂函数中方便进行命名和定义自包含代码模块的方式。当然，有时候撰写小巧的没有完整定义和命名的类函数结构也是很有用处的，尤其是在您处理一些函数并需要将另外一些函数作为该函数的参数时。
      
 
      闭包表达式是一种利用简洁语法构建内联闭包的方式。
 闭包表达式提供了一些语法优化，使得撰写闭包变得简单明了。
 下面闭包表达式的例子通过使用几次迭代展示了sort函数定义和语法优化的方式。
@@ -757,8 +756,7 @@ 
      尾随闭包（Trailing Closures）
      
 // 其值为 ["OneSix", "FiveEight", "FiveOneZero"]
 
      map在数组中为每一个元素调用了闭包表达式。
 您不需要指定闭包的输入参数number的类型，因为可以通过要映射的数组类型进行推断。
      
-
      闭包number参数被声明为一个变量参数（变量的具体描述请参看常量参数和变量参数），因此可以在闭包函数体内对其进行修改。
-闭包表达式制定了返回类型为String，以表明存储映射值的新数组类型为String。
      
+
      闭包number参数被声明为一个变量参数（变量的具体描述请参看常量参数和变量参数），因此可以在闭包函数体内对其进行修改。闭包表达式制定了返回类型为String，以表明存储映射值的新数组类型为String。
      
 
      闭包表达式在每次被调用的时候创建了一个字符串并返回。
 其使用求余运算符 (number % 10) 计算最后一位数字并利用digitNames字典获取所映射的字符串。
      
 
      
diff --git a/chapter2/08_Enumerations.html b/chapter2/08_Enumerations.html
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@@ -21,8 +21,8 @@
         
         
 
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-        这一次，让中国和世界同步
+        Swift 编程语言
     
      
 
      
 
@@ -587,7 +587,7 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
 
      翻译：yankuangshi
      
diff --git a/chapter2/09_Classes_and_Structures.html b/chapter2/09_Classes_and_Structures.html
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+        Swift 编程语言
     
      
 
      
 
@@ -587,7 +587,7 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
 
      翻译：JaySurplus
      
diff --git a/chapter2/10_Properties.html b/chapter2/10_Properties.html
index a509a3734..6ee396b10 100644
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+++ b/chapter2/10_Properties.html
@@ -21,8 +21,8 @@
         
         
 
-        
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+        
         
         
 
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-        这一次，让中国和世界同步
+        Swift 编程语言
     
      
 
      
 
@@ -587,7 +587,7 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
 
      翻译：shinyzhu
      
diff --git a/chapter2/11_Methods.html b/chapter2/11_Methods.html
index 86aa2d711..46db4aaa6 100644
--- a/chapter2/11_Methods.html
+++ b/chapter2/11_Methods.html
@@ -21,8 +21,8 @@
         
         
 
-        
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-        这一次，让中国和世界同步
+        Swift 编程语言
     
      
 
      
 
@@ -587,11 +587,11 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
 
      翻译：pp-prog
      
-
      校对：地
      
+
      校对：zqp
      
 
      
 
      方法（Methods）
      
 
      
diff --git a/chapter2/12_Subscripts.html b/chapter2/12_Subscripts.html
index 263ee9b38..d89e5ca0f 100644
--- a/chapter2/12_Subscripts.html
+++ b/chapter2/12_Subscripts.html
@@ -21,8 +21,8 @@
         
         
 
-        
-        
+        
+        
         
         
 
@@ -46,7 +46,7 @@
 
 
         
-    
      
+    
      
     
      
     
     
@@ -98,7 +98,7 @@
     
     
      
         
-        这一次，让中国和世界同步
+        Swift 编程语言
     
      
 
      
 
@@ -587,7 +587,7 @@ 
      
 
                 
      
                 
-                    
      
+                    
      
                     
                         
      
 
      翻译：siemenliu
      
@@ -634,7 +634,7 @@ 
      附属脚本语法
      
 println("3的6倍是\(threeTimesTable[6])")
 // 输出 "3的6倍是18"

    在上例中，通过TimesTable结构体创建了一个用来表示索引值三倍的实例。数值3作为结构体构造函数入参初始化实例成员multiplier。

    -

    你可以通过附属脚本来来得到结果，比如threeTimesTable[6]。这句话访问了threeTimesTable的第六个元素，返回18或者6的3倍。

    +

    你可以通过附属脚本来得到结果，比如threeTimesTable[6]。这条语句访问了threeTimesTable的第六个元素，返回6的3倍即18。

    注意：

    TimesTable例子是基于一个固定的数学公式。它并不适合开放写权限来对threeTimesTable[someIndex]进行赋值操作，这也是为什么附属脚本只定义为只读的原因。

    @@ -649,7 +649,7 @@

    附属脚本用法

    更多关于字典（Dictionary）附属脚本的信息请参考读取和修改字典

    注意：

    -

    Swift 中字典的附属脚本实现中，在get部分返回值是Int?，上例中的numberOfLegs字典通过下边返回的是一个Int?或者说“可选的int”，不是每个字典的索引都能得到一个整型值，对于没有设过值的索引的访问返回的结果就是nil；同样想要从字典实例中删除某个索引下的值也只需要给这个索引赋值为nil即可。

    +

    Swift 中字典的附属脚本实现中，在get部分返回值是Int?，上例中的numberOfLegs字典通过附属脚本返回的是一个Int?或者说“可选的int”，不是每个字典的索引都能得到一个整型值，对于没有设过值的索引的访问返回的结果就是nil；同样想要从字典实例中删除某个索引下的值也只需要给这个索引赋值为nil即可。

    附属脚本选项

    diff --git a/chapter2/13_Inheritance.html b/chapter2/13_Inheritance.html index a52b210f1..3800988fb 100644 --- a/chapter2/13_Inheritance.html +++ b/chapter2/13_Inheritance.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：Hawstein

    diff --git a/chapter2/14_Initialization.html b/chapter2/14_Initialization.html index d1b6904e6..cff9e5d2c 100644 --- a/chapter2/14_Initialization.html +++ b/chapter2/14_Initialization.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：lifedim

    diff --git a/chapter2/15_Deinitialization.html b/chapter2/15_Deinitialization.html index cf65fe229..719b36378 100644 --- a/chapter2/15_Deinitialization.html +++ b/chapter2/15_Deinitialization.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：bruce0505

    diff --git a/chapter2/16_Automatic_Reference_Counting.html b/chapter2/16_Automatic_Reference_Counting.html index 2c37a4735..d62514f14 100644 --- a/chapter2/16_Automatic_Reference_Counting.html +++ b/chapter2/16_Automatic_Reference_Counting.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：TimothyYe

    diff --git a/chapter2/17_Optional_Chaining.html b/chapter2/17_Optional_Chaining.html index 20d20b95e..adedb597d 100644 --- a/chapter2/17_Optional_Chaining.html +++ b/chapter2/17_Optional_Chaining.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：Jasonbroker

    diff --git a/chapter2/18_Type_Casting.html b/chapter2/18_Type_Casting.html index 14a5db174..c63ded4cf 100644 --- a/chapter2/18_Type_Casting.html +++ b/chapter2/18_Type_Casting.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：xiehurricane

    diff --git a/chapter2/19_Nested_Types.html b/chapter2/19_Nested_Types.html index 2dceade30..41dfea324 100644 --- a/chapter2/19_Nested_Types.html +++ b/chapter2/19_Nested_Types.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：Lin-H

    diff --git a/chapter2/20_Extensions.html b/chapter2/20_Extensions.html index 6c4983d5e..dc6268792 100644 --- a/chapter2/20_Extensions.html +++ b/chapter2/20_Extensions.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：lyuka

    diff --git a/chapter2/21_Protocols.html b/chapter2/21_Protocols.html index 22062371e..f33c6fe38 100644 --- a/chapter2/21_Protocols.html +++ b/chapter2/21_Protocols.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：geek5nan

    diff --git a/chapter2/22_Generics.html b/chapter2/22_Generics.html index dfe0c79ae..09cb79417 100644 --- a/chapter2/22_Generics.html +++ b/chapter2/22_Generics.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：takalard

    diff --git a/chapter2/23_Advanced_Operators.html b/chapter2/23_Advanced_Operators.html index df7fde994..f7f938a33 100644 --- a/chapter2/23_Advanced_Operators.html +++ b/chapter2/23_Advanced_Operators.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：xielingwang

    diff --git a/chapter2/chapter2.html b/chapter2/chapter2.html index 2411f26ac..dafc0ffa1 100644 --- a/chapter2/chapter2.html +++ b/chapter2/chapter2.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    Swift 教程

    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。

    diff --git a/chapter3/01_About_the_Language_Reference.html b/chapter3/01_About_the_Language_Reference.html index e560eae79..934261fbc 100644 --- a/chapter3/01_About_the_Language_Reference.html +++ b/chapter3/01_About_the_Language_Reference.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：ChildhoodAndy

    diff --git a/chapter3/02_Lexical_Structure.html b/chapter3/02_Lexical_Structure.html index 1a9a57fcc..f0729244d 100644 --- a/chapter3/02_Lexical_Structure.html +++ b/chapter3/02_Lexical_Structure.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：superkam

    diff --git a/chapter3/03_Types.html b/chapter3/03_Types.html index d24005fc3..f179b5f27 100644 --- a/chapter3/03_Types.html +++ b/chapter3/03_Types.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：lyuka

    diff --git a/chapter3/04_Expressions.html b/chapter3/04_Expressions.html index 6e7b0a793..b7f8efcbb 100644 --- a/chapter3/04_Expressions.html +++ b/chapter3/04_Expressions.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：sg552

    diff --git a/chapter3/05_Declarations.html b/chapter3/05_Declarations.html index b896b4cf4..351acc789 100644 --- a/chapter3/05_Declarations.html +++ b/chapter3/05_Declarations.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：marsprince

    diff --git a/chapter3/06_Attributes.html b/chapter3/06_Attributes.html index be390a798..0204e6c7e 100644 --- a/chapter3/06_Attributes.html +++ b/chapter3/06_Attributes.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：Hawstein

    diff --git a/chapter3/07_Patterns.html b/chapter3/07_Patterns.html index e393f0bdc..5c4dbf1bc 100644 --- a/chapter3/07_Patterns.html +++ b/chapter3/07_Patterns.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：honghaoz

    diff --git a/chapter3/08_Generic_Parameters_and_Arguments.html b/chapter3/08_Generic_Parameters_and_Arguments.html index 6e08505db..ef5cd7c26 100644 --- a/chapter3/08_Generic_Parameters_and_Arguments.html +++ b/chapter3/08_Generic_Parameters_and_Arguments.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,7 +587,7 @@

    -
    +

    翻译：fd5788

    diff --git a/chapter3/09_Summary_of_the_Grammar.html b/chapter3/09_Summary_of_the_Grammar.html index 1af9c81c4..e65be0035 100644 --- a/chapter3/09_Summary_of_the_Grammar.html +++ b/chapter3/09_Summary_of_the_Grammar.html @@ -19,8 +19,8 @@ - - + + @@ -44,7 +44,7 @@ -
    +
    @@ -96,7 +96,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -585,7 +585,7 @@

    -
    +

    翻译：StanZhai

    diff --git a/chapter3/10_Statements.html b/chapter3/10_Statements.html index 05fa7ebd8..fdea6316a 100644 --- a/chapter3/10_Statements.html +++ b/chapter3/10_Statements.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -587,11 +587,11 @@

    -
    +

    翻译：coverxit

    -

    校对：numbbbbb

    +

    校对：numbbbbb, coverxit

    语句

    @@ -604,7 +604,7 @@

    语句

    在 Swift 中，有两种类型的语句：简单语句和控制流语句。简单语句是最常见的，用于构造表达式和声明。控制流语句则用于控制程序执行的流程，Swift 中有三种类型的控制流语句：循环语句、分支语句和控制传递语句。

    循环语句用于重复执行代码块；分支语句用于执行满足特定条件的代码块；控制传递语句则用于修改代码的执行顺序。在稍后的叙述中，将会详细地介绍每一种类型的控制流语句。

    -

    是否将分号(;)添加到语句的结尾处是可选的。但若要在同一行内写多条独立语句，请务必使用分号。

    +

    是否将分号（;）添加到语句的结尾处是可选的。但若要在同一行内写多条独立语句，请务必使用分号。

    GRAMMAR OF A STATEMENT

    statement → expression; opt

    @@ -618,7 +618,7 @@

    语句

    循环语句

    取决于特定的循环条件，循环语句允许重复执行代码块。Swift 提供四种类型的循环语句：for语句、for-in语句、while语句和do-while语句。

    -

    通过break语句和continue语句可以改变循环语句的控制流。有关这两条语句，请参考Break 语句和Continue 语句。

    +

    通过break语句和continue语句可以改变循环语句的控制流。有关这两条语句，详情参见 Break 语句和 Continue 语句。

    GRAMMAR OF A LOOP STATEMENT

    loop-statement → for-statement

    @@ -633,18 +633,18 @@

    For 语句

    `statements` } -

    initialzation、condition和increment之间的分号，以及包围循环体statements的大括号都是不可省略的。

    +

    initialzation、condition 和 increment 之间的分号，以及包围循环体 statements 的大括号都是不可省略的。

    for语句的执行流程如下：

      -

    1. initialzation只会被执行一次，通常用于声明和初始化在接下来的循环中需要使用的变量。

      +

    2. initialzation 只会被执行一次，通常用于声明和初始化在接下来的循环中需要使用的变量。

      3. -

    3. 计算condition表达式： - 如果为真(true)，statements将会被执行，然后转到第3步。如果为假(false)，statements和increment都不会被执行，for至此执行完毕。

      +

    4. 计算 condition 表达式： + 如果为true，statements 将会被执行，然后转到第3步。如果为false，statements 和 increment 都不会被执行，for至此执行完毕。

      5. -

    5. 计算increment表达式，然后转到第2步。

      +

    6. 计算 increment 表达式，然后转到第2步。

    -

    定义在initialzation中的变量仅在for语句的作用域以内有效。condition表达式的值的类型必须遵循LogicValue协议。

    +

    定义在 initialzation 中的变量仅在for语句的作用域以内有效。condition 表达式的值的类型必须遵循LogicValue协议。

    GRAMMAR OF A FOR STATEMENT

    for-statement → for for-init opt ; expression opt ; expression opt code-block

    @@ -652,13 +652,13 @@

    For 语句

    for-statement → variable-declaration | expression-list

    For-In 语句

    -

    for-in语句允许在重复执行代码块的同时，迭代集合(或遵循Sequence协议的任意类型)中的每一项。

    +

    for-in语句允许在重复执行代码块的同时，迭代集合（或遵循Sequence协议的任意类型）中的每一项。

    for-in语句的形式如下：

    for `item` in `collection` {
     `statements`
 }
    -

    for-in语句在循环开始前会调用collection表达式的generate方法来获取一个生成器类型（这是一个遵循Generator协议的类型）的值。接下来循环开始，调用collection表达式的next方法。如果其返回值不是None，它将会被赋给item，然后执行statements，执行完毕后回到循环开始处；否则，将不会赋值给item也不会执行statements，for-in至此执行完毕。

    +

    for-in语句在循环开始前会调用 collection 表达式的generate方法来获取一个生成器类型（这是一个遵循Generator协议的类型）的值。接下来循环开始，调用 collection 表达式的next方法。如果其返回值不是None，它将会被赋给 item，然后执行 statements，执行完毕后回到循环开始处；否则，将不会赋值给 item 也不会执行 statements，for-in至此执行完毕。

    GRAMMAR OF A FOR-IN STATEMENT

    for-in-statement → for pattern in expression code-block

    @@ -672,14 +672,14 @@

    While 语句

    while语句的执行流程如下：

      -

    1. 计算condition表达式： - 如果为真(true)，转到第2步。如果为假(false)，while至此执行完毕。

      +

    2. 计算 condition 表达式： + 如果为真true，转到第2步。如果为false，while至此执行完毕。

      3. -

    3. 执行statements，然后转到第1步。

      +

    4. 执行 statements ，然后转到第1步。

    -

    由于condition的值在statements执行前就已计算出，因此while语句中的statements可能会被执行若干次，也可能不会被执行。

    -

    condition表达式的值的类型必须遵循LogicValue协议。同时，condition表达式也可以使用可选绑定，请参考可选绑定待添加链接。

    +

    由于 condition 的值在 statements 执行前就已计算出，因此while语句中的 statements 可能会被执行若干次，也可能不会被执行。

    +

    condition 表达式的值的类型必须遵循LogicValue协议。同时，condition 表达式也可以使用可选绑定，详情参见可选绑定。

    GRAMMAR OF A WHILE STATEMENT

    while-statement → while while-condition code-block

    @@ -694,14 +694,14 @@

    Do-While 语句

    do-while语句的执行流程如下：

      -

    1. 执行statements，然后转到第2步。

      +

    2. 执行 statements，然后转到第2步。

      3. -

    3. 计算condition表达式： - 如果为真(true)，转到第1步。如果为假(false)，do-while至此执行完毕。

      +

    4. 计算 condition 表达式： + 如果为true，转到第1步。如果为false，do-while至此执行完毕。

    -

    由于condition表达式的值是在statements表达式执行后才计算出，因此do-while语句中的statements至少会被执行一次。

    -

    condition表达式的值的类型必须遵循LogicValue协议。同时，condition表达式也可以使用可选绑定，请参考可选绑定待添加链接。

    +

    由于 condition 表达式的值是在 statements 执行后才计算出，因此do-while语句中的 statements 至少会被执行一次。

    +

    condition 表达式的值的类型必须遵循LogicValue协议。同时，condition 表达式也可以使用可选绑定，详情参见可选绑定。

    GRAMMAR OF A DO-WHILE STATEMENT

    do-while-statement → do code-block while while-condition

    @@ -709,7 +709,7 @@

    Do-While 语句

    分支语句

    取决于一个或者多个条件的值，分支语句允许程序执行指定部分的代码。显然，分支语句中条件的值将会决定如何分支以及执行哪一块代码。Swift 提供两种类型的分支语句：if语句和switch语句。

    -

    switch语句中的控制流可以用break语句修改，请参考Break 语句。

    +

    switch语句中的控制流可以用break语句修改，详情请见Break 语句。

    GRAMMAR OF A BRANCH STATEMENT

    branch-statement → if-statement

    @@ -723,14 +723,14 @@

    If 语句

    `statements` } -

    第二种形式是在第一种形式的基础上添加else语句，当只有一个else语句时，像下面这样：

    +

    第二种形式是在第一种形式的基础上添加 else 语句，当只有一个 else 语句时，像下面这样：

    if `condition` {
     `statements to execute if condition is true`
 } else {
     `statements to execute if condition is false`
 }
    -

    同时，else语句也可包含if语句，从而形成一条链来测试更多的条件，像下面这样：

    +

    同时，else 语句也可包含if语句，从而形成一条链来测试更多的条件，像下面这样：

    if `condition 1` {
     `statements to execute if condition 1 is true`
 } else if `condition 2` {
@@ -740,7 +740,7 @@ 
    If 语句
    
     `statements to execute if both conditions are false`
 }
    -

    if语句中条件的值的类型必须遵循LogicValue协议。同时，条件也可以使用可选绑定，请参考可选绑定待添加链接。

    +

    if语句中条件的值的类型必须遵循LogicValue协议。同时，条件也可以使用可选绑定，详情参见可选绑定。

    GRAMMAR OF AN IF STATEMENT

    if-statement → if if-condition code-block else-clause opt

    @@ -748,7 +748,7 @@

    If 语句

    else-clause → else code-block | else if-statement opt

    Switch 语句

    -

    取决于switch语句的控制表达式(control expression)，switch语句将决定执行哪一块代码。

    +

    取决于switch语句的控制表达式（control expression），switch语句将决定执行哪一块代码。

    switch语句的形式如下：

    switch `control expression` {
     case `pattern 1`:
@@ -762,19 +762,18 @@ 
    Switch 语句
    
         `statements`
 }
    -

    switch语句的控制表达式(control expression)会首先被计算，然后与每一个case的模式(pattern)进行匹配。如果匹配成功，程序将会执行对应的case块里的statements。另外，每一个case块都不能为空，也就是说在每一个case块中至少有一条语句。如果你不想在匹配到的case块中执行代码，只需在块里写一条break语句即可。

    -

    可以用作控制表达式的值是十分灵活的，除了标量类型(scalar types，如Int、Character)外，你可以使用任何类型的值，包括浮点数、字符串、元组、自定义类的实例和可选(optional)类型，甚至是枚举类型中的成员值和指定的范围(range)等。关于在switch语句中使用这些类型，请参考控制流一章的Switch。

    -

    你可以在模式后面添加一个起保护作用的表达式(guard expression)。起保护作用的表达式是这样构成的：关键字where后面跟着一个作为额外测试条件的表达式。因此，当且仅当控制表达式匹配一个case的某个模式且起保护作用的表达式为真时，对应case块中的statements才会被执行。在下面的例子中，控制表达式只会匹配含两个相等元素的元组，如(1, 1)：

    +

    switch语句的控制表达式（control expression）会首先被计算，然后与每一个 case 的模式（pattern）进行匹配。如果匹配成功，程序将会执行对应的 case 分支里的 statements。另外，每一个 case 分支都不能为空，也就是说在每一个 case 分支中至少有一条语句。如果你不想在匹配到的 case 分支中执行代码，只需在该分支里写一条break语句即可。

    +

    可以用作控制表达式的值是十分灵活的，除了标量类型(scalar types，如Int、Character)外，你可以使用任何类型的值，包括浮点数、字符串、元组、自定义类的实例和可选（optional）类型，甚至是枚举类型中的成员值和指定的范围(range)等。关于在switch语句中使用这些类型，详情参见控制流一章的 Switch。

    +

    你可以在模式后面添加一个起保护作用的表达式(guard expression)。起保护作用的表达式是这样构成的：关键字where后面跟着一个作为额外测试条件的表达式。因此，当且仅当控制表达式匹配一个case的某个模式且起保护作用的表达式为真时，对应 case 分支中的 statements 才会被执行。在下面的例子中，控制表达式只会匹配含两个相等元素的元组，如(1, 1)：

    case let (x, y) where x == y:
-}
    -

    正如上面这个例子，也可以在模式中使用let（或var）语句来绑定常量（或变量）。这些常量（或变量）可以在其对应的起保护作用的表达式和其对应的case块里的代码中引用。但是，如果case中有多个模式匹配控制表达式，那么这些模式都不能绑定常量（或变量）。

    -

    switch语句也可以包含默认(default)块，只有其它case块都无法匹配控制表达式时，默认块中的代码才会被执行。一个switch语句只能有一个默认块，而且必须在switch语句的最后面。

    -

    尽管模式匹配操作实际的执行顺序，特别是模式的计算顺序是不可知的，但是 Swift 规定switch语句中的模式匹配的顺序和书写源代码的顺序保持一致。因此，当多个模式含有相同的值且能够匹配控制表达式时，程序只会执行源代码中第一个匹配的case块中的代码。

    +

    正如上面这个例子，也可以在模式中使用let（或var）语句来绑定常量（或变量）。这些常量（或变量）可以在其对应的起保护作用的表达式和其对应的case块里的代码中引用。但是，如果 case 中有多个模式匹配控制表达式，那么这些模式都不能绑定常量（或变量）。

    +

    switch语句也可以包含默认（default）分支，只有其它 case 分支都无法匹配控制表达式时，默认分支中的代码才会被执行。一个switch语句只能有一个默认分支，而且必须在switch语句的最后面。

    +

    尽管模式匹配操作实际的执行顺序，特别是模式的计算顺序是不可知的，但是 Swift 规定switch语句中的模式匹配的顺序和书写源代码的顺序保持一致。因此，当多个模式含有相同的值且能够匹配控制表达式时，程序只会执行源代码中第一个匹配的 case 分支中的代码。

    Switch 语句必须是完备的

    -

    在 Swift 中，switch语句中控制表达式的每一个可能的值都必须至少有一个case块与之对应。在某些情况下（例如，表达式的类型是Int），你可以使用默认块满足该要求。

    +

    在 Swift 中，switch语句中控制表达式的每一个可能的值都必须至少有一个 case 分支与之对应。在某些情况下（例如，表达式的类型是Int），你可以使用默认块满足该要求。

    不存在隐式的贯穿(fall through)

    -

    当匹配的case块中的代码执行完毕后，程序会终止switch语句，而不会继续执行下一个case块。这就意味着，如果你想执行下一个case块，需要显式地在你需要的case块里使用fallthrough语句。关于fallthrough语句的更多信息，请参考Fallthrough 语句。

    +

    当匹配的 case 分支中的代码执行完毕后，程序会终止switch语句，而不会继续执行下一个 case 分支。这就意味着，如果你想执行下一个 case 分支，需要显式地在你需要的 case 分支里使用fallthrough语句。关于fallthrough语句的更多信息，详情参见 Fallthrough 语句。

    GRAMMAR OF A SWITCH STATEMENT

    switch-statement → switch expression { switch-cases opt }

    @@ -789,9 +788,9 @@

    不存在隐式的贯穿(fall through)

    带标签的语句

    -

    你可以在循环语句或switch语句前面加上标签，它由标签名和紧随其后的冒号(:)组成。在break和continue后面跟上标签名可以显式地在循环语句或switch语句中更改控制流，把控制权传递给指定标签标记的语句。关于这两条语句用法，请参考Break 语句和Continue 语句。

    +

    你可以在循环语句或switch语句前面加上标签，它由标签名和紧随其后的冒号(:)组成。在break和continue后面跟上标签名可以显式地在循环语句或switch语句中更改控制流，把控制权传递给指定标签标记的语句。关于这两条语句用法，详情参见 Break 语句和 Continue 语句。

    标签的作用域是该标签所标记的语句之后的所有语句。你可以不使用带标签的语句，但只要使用它，标签名就必唯一。

    -

    关于使用带标签的语句的例子，请参考控制流一章的带标签的语句待添加链接。

    +

    关于使用带标签的语句的例子，详情参见控制流一章的带标签的语句。

    GRAMMAR OF A LABELED STATEMENT

    labeled-statement → statement-label loop-statement | statement-label switch-statement

    @@ -809,38 +808,38 @@

    控制传递语句

    Break 语句

    -

    break语句用于终止循环或switch语句的执行。使用break语句时，可以只写break这个关键词，也可以在break后面跟上标签名(label name)，像下面这样：

    +

    break语句用于终止循环或switch语句的执行。使用break语句时，可以只写break这个关键词，也可以在break后面跟上标签名（label name），像下面这样：

    break
 break `label name`

    当break语句后面带标签名时，可用于终止由这个标签标记的循环或switch语句的执行。

    而当只写break时，则会终止switch语句或上下文中包含break语句的最内层循环的执行。

    在这两种情况下，控制权都会被传递给循环或switch语句外面的第一行语句。

    -

    关于使用break语句的例子，请参考控制流一章的Break待添加链接和带标签的语句待添加链接。

    +

    关于使用break语句的例子，详情参见控制流一章的 Break 和带标签的语句。

    GRAMMAR OF A BREAK STATEMENT

    break-statement → break label-name opt

    Continue 语句

    -

    continue语句用于终止循环中当前迭代的执行，但不会终止该循环的执行。使用continue语句时，可以只写continue这个关键词，也可以在continue后面跟上标签名(label name)，像下面这样：

    +

    continue语句用于终止循环中当前迭代的执行，但不会终止该循环的执行。使用continue语句时，可以只写continue这个关键词，也可以在continue后面跟上标签名（label name），像下面这样：

    continue
 continue `label name`

    当continue语句后面带标签名时，可用于终止由这个标签标记的循环中当前迭代的执行。

    而当只写break时，可用于终止上下文中包含continue语句的最内层循环中当前迭代的执行。

    在这两种情况下，控制权都会被传递给循环外面的第一行语句。

    -

    在for语句中，continue语句执行后，increment表达式还是会被计算，这是因为每次循环体执行完毕后increment表达式都会被计算。

    -

    关于使用continue语句的例子，请参考控制流一章的Continue待添加链接和带标签的语句待添加链接。

    +

    在for语句中，continue语句执行后，increment 表达式还是会被计算，这是因为每次循环体执行完毕后 increment 表达式都会被计算。

    +

    关于使用continue语句的例子，详情参见控制流一章的 Continue 和带标签的语句。

    GRAMMAR OF A CONTINUE STATEMENT

    continue-statement → continue label-name opt

    Fallthrough 语句

    -

    fallthrough语句用于在switch语句中传递控制权。fallthrough语句会把控制权从switch语句中的一个case传递给下一个case。这种传递是无条件的，即使下一个case的值与switch语句的控制表达式的值不匹配。

    -

    fallthrough语句可出现在switch语句中的任意case里，但不能出现在最后一个case块中。同时，fallthrough语句也不能把控制权传递给使用了可选绑定的case块。

    -

    关于在switch语句中使用fallthrough语句的例子，请参考控制流一章的控制传递语句待添加链接。

    +

    fallthrough语句用于在switch语句中传递控制权。fallthrough语句会把控制权从switch语句中的一个 case 传递给下一个 case 。这种传递是无条件的，即使下一个 case 的模式与switch语句的控制表达式的值不匹配。

    +

    fallthrough语句可出现在switch语句中的任意 case 里，但不能出现在最后一个 case 分支中。同时，fallthrough语句也不能把控制权传递给使用了可选绑定的 case 分支。

    +

    关于在switch语句中使用fallthrough语句的例子，详情参见控制流一章的控制传递语句。

    GRAMMAR OF A FALLTHROUGH STATEMENT

    continue-statement → fallthrough

    diff --git a/chapter3/chapter3.html b/chapter3/chapter3.html index 62a9febf7..d28354f03 100644 --- a/chapter3/chapter3.html +++ b/chapter3/chapter3.html @@ -21,8 +21,8 @@ - - + + @@ -46,7 +46,7 @@ -
    +
    @@ -98,7 +98,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    diff --git a/index.html b/index.html index 061f31a41..a6d390623 100644 --- a/index.html +++ b/index.html @@ -19,8 +19,8 @@ - - + + @@ -44,7 +44,7 @@ -
    +
    @@ -96,7 +96,7 @@

    - 这一次，让中国和世界同步 + Swift 编程语言

    @@ -585,7 +585,7 @@

    -
    +

    Swift 中文翻译组：364279588（要求对翻译感兴趣）

    @@ -596,12 +596,13 @@

    如果你觉得这个项目不错，请点击Star一下，您的支持我们最大的动力。

    -

    这一次，让中国和世界同步

    +

    Swift 编程语言

    +

    这一次，让中国和世界同步

    现在是6月12日凌晨4:38，我用了整整一晚上的时间来进行最后的校对，终于可以在12日拿出一个可以发布的版本。

    9天时间，1317个 Star，310个 Fork，超过30人参与翻译和校对工作，项目最高排名GitHub总榜第4。

    设想过很多遍校对完成时的场景，仰天大笑还是泪流满面？真正到了这一刻才发现，疲倦已经不允许我有任何情绪。

    说实话，刚开始发起项目的时候完全没想到会发展成今天这样，我一度计划自己一个人翻译完整本书。万万没想到，会有这么多的人愿意加入并贡献出自己的力量。

    -

    coverxit发给我最后一份文档的时候说，我要去背单词了，我问她，周末要考六级？她说是的。

    +

    coverxit发给我最后一份文档的时候说，我要去背单词了，我问他，周末要考六级？他说是的。

    pp-prog告诉我，这几天太累了，校对到一半睡着了，醒来又继续做。2点17分，发给我校对完成的文档。

    lifedim说他平时12点就会睡，1点47分，发给我校对后的文档。

    团队里每个人都有自己的事情，上班、上学、创业，但是我们只用了9天就完成整本书的翻译。我不知道大家付出了多少，牺牲了多少，但是我知道，他们的付出必将被这些文字记录下来，即使再过10年，20年，依然熠熠生辉，永不被人遗忘。

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ameloop去跳转到下一次循环迭代时，这里使用gameloop标签并不是严格必须的。因为在这个游戏中，只有一个循环体，所以continue语句会影响到哪个循环体是没有歧义的。然而，continue语句使用gameloop标签也是没有危害的。这样做符合标签的使用规则，同时参照旁边的break","gameloop语句结束本次whil","gameloop语句跳转控制去执行whil","gear","geek5nan","gener","generator.random","generic-argu","generic-argument-claus","generic-argument-clause[opt","generic-argument-clause[opt].type-identifi","generic-argument-list","generic-argument­,­generic-argument-list","generic-paramet","generic-parameter-claus","generic-parameter-list","generic-parameter­,­generic-parameter-list","getgaspric","gettable，但它不要求属性是存储型属性(stor","getter","getter-claus","getter-keyword-claus","getter-sett","getter-setter-block","getter-setter-keyword-block","getter-setter方法​​块可以由一个getter子句后跟一个可选的setter子句构成，用大括号括起来，或者由一个setter子句后跟一个gett","getter/sett","getters和sett","getters和setters。（译者注：getters和sett","getter和sett","getter和setter。如果附属脚本申明包含get和set","getter和setter要求。结果就是你不需要在协议里它被声明的地方实现getter和sett","getter和setter要求可以通过一致性类型以各种方式满足。如果属性声明包含get和set关键词，一致性类型就可以用可读写（实现了getter和setter）的存储型变量属性或计算型属性，但是属性不能以常量属性或只读计算型属性实现。如果属性声明仅仅包含get","getter和setter语句。如果附属脚本声明值包含get","getter用于读取值，setter用于写入值。setter子句是可选的，当仅需要一个getter子句时，可以将二者都忽略且直接返回请求的值即可。也就是说，如果使用了setter子句，就必须使用gett","getter用来读取变量值，setter用来写入变量值。setter子句是可选择的，只有gett","getter获取某个值，或者通过sett","getter语句，可以选择是否包含sett","get代码块中的代码写在subscript","get关键字表示。它们的返回值是double型，而且可以用于所有接受doubl","get部分返回值是int?，上例中的numberoflegs字典通过下边返回的是一个int?或者说“可选的int”，不是每个字典的索引都能得到一个整型值，对于没有设过值的索引的访问返回的结果就是nil；同样想要从字典实例中删除某个索引下的值也只需要给这个索引赋值为nil","ghostbust","give","given","global","goe","gonna","good","goodby","graham","grammar","graphem","great","green","greencompon","greet","greet(\"bob","greet(nam","grid","grid[(row","grtmndsthnklk","gt","gt;>","gt;"","gt;infix-operator-declar","gt;­attribut","gt;­attributes­opt­typ","gt;！&","guard","guard-claus","guard-express","h","half-clos","halfopenrangelength(start","hall","hamster","hamster(nam","hamster的实例可以作为textrepresent","haolloyin","happi","happym","harmless","hasanymatches(list","hasanymatches(numb","hasarea","hasarea协议时，通过as?操作符将其可选绑定(opt","hasdoorkei","hasdoorkey）为false，但第二个值（knowsoverridepassword）为true，所以整个表达是tru","hashabl","hashable和valuetype产生的。每一个类型实参必须满足它所替代的泛型形参的所有约束，包括任何where语句所指定的额外的要求。上面的例子中，类型形参keytype要求满足hashable协议，因此string也必须满足hash","hashead","hasprefix","hasprefix/hassuffix","hassuffix","hawk","hawstein","hd","hd.width","hd实例中width属性还是1920","hd的常量，其值为一个初始化为全高清视频分辨率(1920","hd赋予给cinema的时候，实际上是将hd中所储存的值(values)进行拷贝，然后将拷贝的数据储存到新的cinema实例中。结果就是两个完全独立的实例碰巧包含有相同的数值。由于两者相互独立，因此将cinema的width修改为2048并不会影响hd中的宽(width","heart","hearts.simpledescript","heartsdescript","heartssymbol","hearts成员：给hearts常量赋值时，枚举成员suit.hearts需要用全名来引用，因为常量没有显式指定类型。在switch里，枚举成员使用缩写.hearts来引用，因为self的值已经知道是一个suit","heathrow","height","height=\"120","height=\"169","height=\"357","height=\"387","heigth","hello","hello-world","help","here","here'","hexadecim","hexadecimal-digit","hexadecimal-expon","hexadecimal-fract","hexadecimal-liter","hexadecimal-literal-charact","hexadecimaldoubl","hexadecimalinteg","high","highest","highestunlockedlevel","highland","hilari","honghaoz","horizont","horribl","hors","html","htmlelement","htmlelement(nam","htmlelementdeinitializer中的消息并没有别打印，证明了htmlel","htmlelement例子中，无主引用是正确的解决循环强引用的方法。这样这样编写htmlel","htmlelement实现和之前的实现一致，只是在ashtml闭包中多了一个占有列表。这里，占有列表是[unown","htmlelement类产生了类实例和ashtml","htmlelement类只提供一个构造函数，通过name和text（如果有的话）参数来初始化一个元素。该类也定义了一个析构函数，当htmlel","htmlelement类定义了一个name属性来表示这个元素的名称，例如代表段落的"p"，或者代表换行的"br"。htmlelement还定义了一个可选属性text","htmlelement还定义了一个lazy属性ashtml。这个属性引用了一个闭包，将name和text","http","http200statu","http200status.descript","http200status.statuscod","http404error","http404error.0","http404error.1","human","hundr","i++的特性，不然推荐你使用++i和--i","iboutlet和ibinspectable用于修饰一个类的属性声明；ibaction特性用于修饰一个类的方法声明；ibdesign","ident","identifi","identifier-charact","identifier-head","identifier-list","identifier-list­function-result­(opt)­in","identifier-pattern","identifier-patterntype-annotationopt","identifier­:­express","identifier­generic-argument-clause(opt","if-condit","if-stat","if和let来处理值缺失的情况。有些变量的值是可选的。一个可选的值可能是一个具体的值或者是nil","if和switch来进行条件操作，使用for-in、for、while和do-whil","if或els","if语句中条件的值的类型必须遵循logicvalu","if语句中，条件必须是一个布尔表达式——这意味着像if","if语句允许二选一，也就是当条件为fals","if语句和switch","if语句和switch语句。通常，当条件较为简单且可能的情况很少时，使用if语句。而switch语句更适用于条件较复杂、可能情况较多且需要用到模式匹配（pattern-match","if语句最简单的形式就是只包含一个条件，当且仅当该条件为tru","if语句来判断一个可选是否包含值。如果可选有值，结果是true；如果没有值，结果是fals","if语句用于判断是不是特别热。而最后的els","if语句的第一个分支中操作actualnumber的值，你可以改成if","if语句类似。与之不同的是，switch","if！allowedentri","ignor","imag","img","implement","implicit","implicit-member-express","implicit-parameter-nam","implicitdoubl","implicitinteg","implicitli","implicitly-unwrapped-optional-typ","implicitlyunwrappedoptional解决实例之间的循环强引用解决实例之间的循环强引用弱引用无主引用泛型实参语句泛型形参语句泛型形参语句where语句hello","pad","paddeddoubl","paddedstr","paint","pair","pairs）。遍历字典时，字典的每项元素会以(kei","paragraph","paragraph变量为nil，打破它持有的htmlelement实例的强引用，htmlel","paragraph变量定义为可选htmlelement，因此我们可以赋值nil","parakeet","paramet","parameter)，不支持默认参数(default","parameter-claus","parameter-clause­function-result­(opt)­in","parameter-list","parameter-list­...­opt","parameter-nam","parameternam","parameters"","parameters)或返回类型(return","parameters)指定一个或多个用于在相关类型的附属脚本中访问元素的索引（例如，表达式object[i]中的i）。尽管用于元素访问的索引可以是任意类型的，但是每个变量必须包含一个用于指定每种索引类型的类型标注。返回类型(return","parameters）函数类型（funct","parameters）常量参数和变量参数（const","parameters）无参函数（funct","parameters）无返回值函数（funct","parameters）输入输出参数（in-out","parameter­,­parameter-list","parent","parenthes","parenthesized-express","passedretinascan","passeng","pattern","pattern-initi","pattern-initializer-list","pattern-matched)的，和其相反的是switch语句case块中枚举事件匹配，在枚举事件类型(enumer","patternastyp","patterns）表达式模式（express","patterns）通配符模式（wildcard","pattern）代表了单个值或者复合值的结构。例如，元组(1","pattern）值绑定模式（value-bind","pattern）元组模式（tupl","pattern）和元组模式（tupl","pattern）枚举案例模式（enumer","pattern）标识符模式（identifi","pattern）类型转换模式（type-cast","pattern），标识符模式（identifi","penguin","pepper","performact","perimet","person","person'","person(fullnam","person(nam","person?的变量，用来按照代码片段中的顺序，为新的person实例建立多个引用。由于这些变量是被定义为可选类型（person?，而不是person），它们的值会被自动初始化为nil，目前还不会引用到person","personnam","person和apart","person和apartment实例并将类实例赋值给john和number73","person和apartment的例子一致，但是有一个重要的区别。这一次，apartment的ten","person和apartment的例子展示了两个属性的值都允许为nil","person和resid","person和residence模型通过添加一个room和一个address","person实例依然保持对apartment实例的强引用，但是apartment实例只是对person实例的弱引用。这意味着当你断开john变量所保持的强引用时，再也没有指向person","person实例有一个类型为string，名字为name的属性，并有一个可选的初始化为nil的apartment属性。apart","person实例现在有了一个指向apartment实例的强引用，而apartment实例也有了一个指向person实例的强引用。因此，当你断开john和number73","person实例的引用数量，并且会在person","person实例，它的resid","person实例，这也意味着你不再使用这个person","person类开始，并定义了一个叫nam","person类有一个构造函数，此构造函数为实例的name属性赋值并打印出信息，以表明初始化过程生效。person","person类的新实例被赋值给了reference1变量，所以reference1到person类的新实例之间建立了一个强引用。正是因为这个强引用，arc","person类的构造函数的时候，"john","person结构体含有一个名为fullnam","peter","pi","piec","pink","pixel","place","plai","plane","planet","planet.earth","planet.earth.toraw","planet.fromraw(7","planet.fromraw(9)语句获得一个可选planet，如果可选planet可以被获得，把someplanet设置成该可选planet的内容。在这个范例中，无法检索到位置为9的行星，所以els","planet.fromraw(positiontofind","planet.uranu","planet.venus的原始值是2","player","player(coin","player(nam","player.completedlevel(1","player.tracker.advancetolevel(6","playernam","playeron","playerone!.coinsinpurs","playerone!.wincoins(2_000","playerone变量设置为nil，意思是“没有player实例”。当这种情况发生的时候，playerone变量对player实例的引用被破坏了。没有其它属性或者变量引用play","playerone是可选的，所以由一个感叹号（!）来修饰，每当其wincoins方法被调用时，coinsinpurs","player实例存储在一个名为playerone的可选play","player类使用leveltrack","player类创建一个新的leveltracker实例来监测这个用户的发展进度。他提供了completedlevel方法：一旦玩家完成某个指定等级就调用它。这个方法为所有玩家解锁下一等级，并且将当前玩家的进度更新为下一等级。（我们忽略了advancetolevel返回的布尔值，因为之前调用leveltracker.unlocklevel","player类定义了一个wincoins方法，该方法从银行获取一定数量的硬币，并把它们添加到玩家的钱包。player类还实现了一个析构函数，这个析构函数在play","pleas","plu","plusminusvector","plusthre","pm","point","point(x","point.0","point.1","pointonefouronefivenin","point封装了一个(x","point来引用元组(int","point来表示square的中心点。如代码所示，它正确返回了中心点(5","point结构体定义了一个变异方法（mut","point（x","pop","pop并移除值"cuatro"","pop方法的返回值，该返回值将是一个t","posit","positiontofind","possibl","possibleinteg","possibleintegervalu","possiblenumb","possiblenumber.toint","possiblenumber.toint返回的可选int包含一个值，创建一个叫做actualnumb","possibleplanet","possiblestr","postfix","postfix-express","postfix-expression­.­decimal-digit","postfix-expression­.­dynamictyp","postfix-expression­.­identifier­generic-argument-clause(opt","postfix-expression­.­init","postfix-expression­.­self","postfix-expression­[­expression-list","postfix-expression­parenthesized-express","postfix-expression­parenthesized-expression­(opt)­trailing-closur","postfix-expression­postfix-oper","postfix-oper","postfix-operator-declar","postfix-self-express","potentialoverflow","powder","power","pp-prog","pp-prog告诉我，这几天太累了，校对到一半睡着了，醒来又继续做。2点17","preced","precedence-claus","precedence-clause­opt­associativity-clause­opt","precedence-level","precedence­precedence-level","precedence并优先级(preced","prefix","prefix-express","prefix-expression­binary-expressions(opt","prefix-oper","prefix-operator-declar","prefix存在时，将prefix插入到name之前来为starship构建fullnam","prefix）表达式，二元（binary）表达式，主要（primary）表达式和后缀（postfix）表达式。表达式可以返回一个值，以及运行某些逻辑（caus","preslei","prettytextrepresent","prettytextrepresentable协议的同时，也需要遵循textrepresent","prettytextrepresentable协议继承了textrepresent","primari","primary-express","prime","print","print(\"\\(codeunit","print(\"\\(scalar.valu","print(\"\\n","print(\"conson","print(\"oth","print(\"vowel","printandcount","printandcount(\"hello","printandcount(stringtoprint","printclassnam","printhelloworld","printletterkinds(\"hello","printletterkinds(word","printletterkinds的输入是一个string值并对其字符进行迭代。在每次迭代过程中，考虑当前字符的kind计算属性，并打印出合适的类别描述。所以printletterkinds就可以用来打印一个完整单词中所有字母的类型，正如上述单词"hello"","println","println(\"'\\\\(word","println(\"(0","println(\"(\\(point.0","println(\"(\\(somepoint.0","println(\"(\\(x","println(\"3的6倍是\\(threetimestable[6","println(\"\\(airportcod","println(\"\\(animalname)","println(\"\\(bas","println(\"\\(country.name)'","println(\"\\(currentvalu","println(\"\\(index","println(\"\\(mansioncount","println(\"\\(nam","println(\"\\(possiblenumb","println(\"\\(scalar","println(\"\\(somecharact","println(\"\\(total.vowel","println(\"a","println(\"about","println(\"access","println(\"ad","println(\"airport","println(\"al","println(\"an","println(\"and","println(\"apart","println(\"area","println(\"automaticcar","println(\"b","println(\"bicycl","println(\"car","println(\"card","println(\"cinema","println(\"count","println(\"eww","println(\"gam","println(\"goodby","println(\"happi","println(\"hd","println(\"hello","println(\"here'","println(\"highest","println(\"i'm","println(\"index","println(\"it","println(\"it'","println(\"item","println(\"john'","println(\"level","println(\"lot","println(\"media","println(\"mmm","println(\"mostli","println(\"movi","println(\"not","println(\"on","println(\"play","println(\"playeron","println(\"qr","println(\"random","println(\"result","println(\"rol","println(\"som","println(\"somebaseclass","println(\"someint","println(\"somesubclass","println(\"someth","println(\"somewher","println(\"song","println(\"speedlimitedcar","println(\"square.origin","println(\"start","println(\"tandem","println(\"tentighti","println(\"th","println(\"that","println(\"theaceofspad","println(\"ther","println(\"thes","println(\"thi","println(\"thre","println(\"un","println(\"unusualmenageri","println(\"upc-a","println(\"watch","println(\"welcom","println(\"wher","println(\"zero","println(a[0","println(ages[\"pet","println(assumedstr","println(audiochannel.maxinputlevelforallchannel","println(b[0","println(board.squareisblackatrow(0","println(board.squareisblackatrow(9","println(c[0","println(cat","println(charact","println(counter.count","println(d12.astext","println(definitestr","println(descript","println(friendlywelcom","println(game.asprettytext","println(game.astext","println(halfopenrangelength(1","println(item","println(item.descript","println(leftchannel.currentlevel","println(manager.importer.filenam","println(messag","println(name[0","println(paragraph!.ashtml","println(possiblestr","println(puzzleoutput","println(rightchannel.currentlevel","println(sayhello(\"anna","println(sayhello(\"brian","println(sayhelloagain(\"anna","println(sayhelloworld","println(someclass.computedtypeproperti","println(somestructure.storedtypeproperti","println(somethingtextrepresentable.astext","println(stringtoprint","println(text","println(thing.astext","println(“th","println函数输出传入的str","println（\"somebaseclass","println（\"somesubclass","printmathresult","printmathresult(addtwoint","printmathresult(mathfunct","printnumberofroom","prints\"hello","printwithoutcount","printwithoutcounting(\"hello","printwithoutcounting(stringtoprint","print（parent!.titl","print（self!.titl","print（self.titl","privat","procotol","productbarcod","productbarcode的新变量，并且赋给它一个barcode.upca的实例元组值(8","productcod","properit","properti","properties）构造器（initializers）方法（methods）修改实例方法（mut","properties），方法（methods），构造过程（initialization），扩展（extensions）和协议（protocol","property)在实例方法中修改值类型(modifi","property)还是计算型属性(calcul","property)，也能够要求属性的(设置权限)sett","property）还是计算型属性（comput","property），后者则把area写为存储型属性（stor","property），或附属脚本（subscript）提供自己定制的实现（implementation）。我们把这种行为叫重写（overrid","properyt","propetri","protocol","protocol<protocol","protocol<someprotocol","protocol-associated-type-declar","protocol-bodi","protocol-composition-typ","protocol-declar","protocol-identifi","protocol-identifier-list","protocol-initializer-declar","protocol-member-declar","protocol-member-declarations­opt","protocol-member-declaration­protocol-member-declarations­opt","protocol-method-declar","protocol-nam","protocol-property-declar","protocol-subscript-declar","protocol(item","repeatedvalu","repeatedvalue:0.0","repetit","repetitions(task","report","represent","requierd","requir","requirement-claus","requirement-list","requirement­,­requirement-list","reserv","reset","reset将计数器重置为0","resid","residence?属性，如果residence存在则取回numberofroom","residence中也提供了一个printnumberofroom","residence具有一个int类型的numberofroom","residence存储了一个room实例的数组，它的numberofrooms属性值不是一个固定的存储值，而是通过计算而来的。numberofrooms属性值是由返回rooms数组的count","residence定义了一个自判断属性叫address（address?）。address","residence实例给john.resid","residence实例给john.residence，且在他的rooms数组中有一个或多个room实例，那么你可以使用可选链通过residence子脚本来获取在room","residence属性numberofrooms属性值，将会引发运行时错误，因为这时没有可以供解析的resid","residence的printnumberofrooms方法会打印numberofroom","residence类中定义的子脚本来获取john.residence数组中第一个房间的名字。因为john.residence现在是nil","resolut","resolution()或videomod","resolution(width","resolution的结构体，用来描述一个显示器的像素分辨率。这个结构体包含了两个名为width和height的储存属性。储存属性是捆绑和储存在类或结构体中的常量或变量。当这两个属性被初始化为整数0的时候，它们会被推断为int","resolution结构体和videomode类的定义仅描述了什么是resolution和videomode。它们并没有描述一个特定的分辨率（resolution）或者视频模式（video","resolution（width:640","respond","respons","response声明为string?类型，或者说是可选字符串类型opt","result","result(str","result(sunris","retriev","return","return-stat","returnf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方法中被当做dicegame类型而不是snakeandladders类型，所以方法中只能访问dicegam","gameloop","gameloop去跳转到下一次循环迭代时，这里使用gameloop标签并不是严格必须的。因为在这个游戏中，只有一个循环体，所以continue语句会影响到哪个循环体是没有歧义的。然而，continue语句使用gameloop标签也是没有危害的。这样做符合标签的使用规则，同时参照旁边的break","gameloop语句结束本次whil","gameloop语句跳转控制去执行whil","gear","geek5nan","gener","generate方法来获取一个生成器类型（这是一个遵循gener","generator.random","generic-argu","generic-argument-claus","generic-argument-clause[opt","generic-argument-clause[opt].type-identifi","generic-argument-list","generic-argument­,­generic-argument-list","generic-paramet","generic-parameter-claus","generic-parameter-list","generic-parameter­,­generic-parameter-list","getgaspric","gettable，但它不要求属性是存储型属性(stor","getter","getter-claus","getter-keyword-claus","getter-sett","getter-setter-block","getter-setter-keyword-block","getter-setter方法​​块可以由一个getter子句后跟一个可选的setter子句构成，用大括号括起来，或者由一个setter子句后跟一个gett","getter/sett","getters和sett","getters和setters。（译者注：getters和sett","getter和sett","getter和setter。如果附属脚本申明包含get和set","getter和setter要求。结果就是你不需要在协议里它被声明的地方实现getter和sett","getter和setter要求可以通过一致性类型以各种方式满足。如果属性声明包含get和set关键词，一致性类型就可以用可读写（实现了getter和setter）的存储型变量属性或计算型属性，但是属性不能以常量属性或只读计算型属性实现。如果属性声明仅仅包含get","getter和setter语句。如果附属脚本声明值包含get","getter用于读取值，setter用于写入值。setter子句是可选的，当仅需要一个getter子句时，可以将二者都忽略且直接返回请求的值即可。也就是说，如果使用了setter子句，就必须使用gett","getter用来读取变量值，setter用来写入变量值。setter子句是可选择的，只有gett","getter获取某个值，或者通过sett","getter语句，可以选择是否包含sett","get代码块中的代码写在subscript","get关键字表示。它们的返回值是double型，而且可以用于所有接受doubl","get部分返回值是int?，上例中的numberoflegs字典通过附属脚本返回的是一个int?或者说“可选的int”，不是每个字典的索引都能得到一个整型值，对于没有设过值的索引的访问返回的结果就是nil；同样想要从字典实例中删除某个索引下的值也只需要给这个索引赋值为nil","ghostbust","give","given","global","goe","gonna","good","goodby","graham","grammar","graphem","great","green","greencompon","greet","greet(\"bob","greet(nam","grid","grid[(row","grtmndsthnklk","gt","gt;>","gt;"","gt;infix-operator-declar","gt;­attribut","gt;­attributes­opt­typ","gt;！&","guard","guard-claus","guard-express","h","half-clos","halfopenrangelength(start","hall","hamster","hamster(nam","hamster的实例可以作为textrepresent","haolloyin","happi","happym","harmless","hasanymatches(list","hasanymatches(numb","hasarea","hasarea协议时，通过as?操作符将其可选绑定(opt","hasdoorkei","hasdoorkey）为false，但第二个值（knowsoverridepassword）为true，所以整个表达是tru","hashabl","hashable和valuetype产生的。每一个类型实参必须满足它所替代的泛型形参的所有约束，包括任何where语句所指定的额外的要求。上面的例子中，类型形参keytype要求满足hashable协议，因此string也必须满足hash","hashead","hasprefix","hasprefix/hassuffix","hassuffix","hawk","hawstein","hd","hd.width","hd实例中width属性还是1920","hd的常量，其值为一个初始化为全高清视频分辨率(1920","hd赋予给cinema的时候，实际上是将hd中所储存的值(values)进行拷贝，然后将拷贝的数据储存到新的cinema实例中。结果就是两个完全独立的实例碰巧包含有相同的数值。由于两者相互独立，因此将cinema的width修改为2048并不会影响hd中的宽(width","heart","hearts.simpledescript","heartsdescript","heartssymbol","hearts成员：给hearts常量赋值时，枚举成员suit.hearts需要用全名来引用，因为常量没有显式指定类型。在switch里，枚举成员使用缩写.hearts来引用，因为self的值已经知道是一个suit","heathrow","height","height=\"120","height=\"169","height=\"357","height=\"387","heigth","hello","hello-world","help","here","here'","hexadecim","hexadecimal-digit","hexadecimal-expon","hexadecimal-fract","hexadecimal-liter","hexadecimal-literal-charact","hexadecimaldoubl","hexadecimalinteg","high","highest","highestunlockedlevel","highland","hilari","honghaoz","horizont","horribl","hors","html","htmlelement","htmlelement(nam","htmlelementdeinitializer中的消息并没有别打印，证明了htmlel","htmlelement例子中，无主引用是正确的解决循环强引用的方法。这样这样编写htmlel","htmlelement实现和之前的实现一致，只是在ashtml闭包中多了一个占有列表。这里，占有列表是[unown","htmlelement类产生了类实例和ashtml","htmlelement类只提供一个构造函数，通过name和text（如果有的话）参数来初始化一个元素。该类也定义了一个析构函数，当htmlel","htmlelement类定义了一个name属性来表示这个元素的名称，例如代表段落的"p"，或者代表换行的"br"。htmlelement还定义了一个可选属性text","htmlelement还定义了一个lazy属性ashtml。这个属性引用了一个闭包，将name和text","http","http200statu","http200status.descript","http200status.statuscod","http404error","http404error.0","http404error.1","human","hundr","i++的特性，不然推荐你使用++i和--i","iboutlet和ibinspectable用于修饰一个类的属性声明；ibaction特性用于修饰一个类的方法声明；ibdesign","ident","identifi","identifier-charact","identifier-head","identifier-list","identifier-list­function-result­(opt)­in","identifier-pattern","identifier-patterntype-annotationopt","identifier­:­express","identifier­generic-argument-clause(opt","if-condit","if-stat","if和let来处理值缺失的情况。有些变量的值是可选的。一个可选的值可能是一个具体的值或者是nil","if和switch来进行条件操作，使用for-in、for、while和do-whil","if或els","if语句中条件的值的类型必须遵循logicvalu","if语句中，条件必须是一个布尔表达式——这意味着像if","if语句允许二选一，也就是当条件为fals","if语句和switch","if语句和switch语句。通常，当条件较为简单且可能的情况很少时，使用if语句。而switch语句更适用于条件较复杂、可能情况较多且需要用到模式匹配（pattern-match","if语句最简单的形式就是只包含一个条件，当且仅当该条件为tru","if语句来判断一个可选是否包含值。如果可选有值，结果是true；如果没有值，结果是fals","if语句用于判断是不是特别热。而最后的els","if语句的第一个分支中操作actualnumber的值，你可以改成if","if语句类似。与之不同的是，switch","if！allowedentri","ignor","imag","img","implement","implicit","implicit-member-express","implicit-parameter-nam","implicitdoubl","implicitinteg","implicitli","implicitly-unwrapped-optional-typ","implicitlyunwrappedoptional解决实例之间的循环强引用解决实例之间的循环强引用弱引用无主引用泛型实参语句泛型形参语句泛型形参语句where语句hello","pad","paddeddoubl","paddedstr","paint","pair","pairs）。遍历字典时，字典的每项元素会以(kei","paragraph","paragraph变量为nil，打破它持有的htmlelement实例的强引用，htmlel","paragraph变量定义为可选htmlelement，因此我们可以赋值nil","parakeet","paramet","parameter)，不支持默认参数(default","parameter-claus","parameter-clause­function-result­(opt)­in","parameter-list","parameter-list­...­opt","parameter-nam","parameternam","parameters"","parameters)或返回类型(return","parameters)指定一个或多个用于在相关类型的附属脚本中访问元素的索引（例如，表达式object[i]中的i）。尽管用于元素访问的索引可以是任意类型的，但是每个变量必须包含一个用于指定每种索引类型的类型标注。返回类型(return","parameters）函数类型（funct","parameters）常量参数和变量参数（const","parameters）无参函数（funct","parameters）无返回值函数（funct","parameters）输入输出参数（in-out","parameter­,­parameter-list","parent","parenthes","parenthesized-express","passedretinascan","passeng","pattern","pattern-initi","pattern-initializer-list","pattern-matched)的，和其相反的是switch语句case块中枚举事件匹配，在枚举事件类型(enumer","patternastyp","patterns）表达式模式（express","patterns）通配符模式（wildcard","pattern）代表了单个值或者复合值的结构。例如，元组(1","pattern）值绑定模式（value-bind","pattern）元组模式（tupl","pattern）和元组模式（tupl","pattern）枚举案例模式（enumer","pattern）标识符模式（identifi","pattern）类型转换模式（type-cast","pattern），标识符模式（identifi","penguin","pepper","performact","perimet","person","person'","person(fullnam","person(nam","person?的变量，用来按照代码片段中的顺序，为新的person实例建立多个引用。由于这些变量是被定义为可选类型（person?，而不是person），它们的值会被自动初始化为nil，目前还不会引用到person","personnam","person和apart","person和apartment实例并将类实例赋值给john和number73","person和apartment的例子一致，但是有一个重要的区别。这一次，apartment的ten","person和apartment的例子展示了两个属性的值都允许为nil","person和resid","person和residence模型通过添加一个room和一个address","person实例依然保持对apartment实例的强引用，但是apartment实例只是对person实例的弱引用。这意味着当你断开john变量所保持的强引用时，再也没有指向person","person实例有一个类型为string，名字为name的属性，并有一个可选的初始化为nil的apartment属性。apart","person实例现在有了一个指向apartment实例的强引用，而apartment实例也有了一个指向person实例的强引用。因此，当你断开john和number73","person实例的引用数量，并且会在person","person实例，它的resid","person实例，这也意味着你不再使用这个person","person类开始，并定义了一个叫nam","person类有一个构造函数，此构造函数为实例的name属性赋值并打印出信息，以表明初始化过程生效。person","person类的新实例被赋值给了reference1变量，所以reference1到person类的新实例之间建立了一个强引用。正是因为这个强引用，arc","person类的构造函数的时候，"john","person结构体含有一个名为fullnam","peter","pi","piec","pink","pixel","place","plai","plane","planet","planet.earth","planet.earth.toraw","planet.fromraw(7","planet.fromraw(9)语句获得一个可选planet，如果可选planet可以被获得，把someplanet设置成该可选planet的内容。在这个范例中，无法检索到位置为9的行星，所以els","planet.fromraw(positiontofind","planet.uranu","planet.venus的原始值是2","player","player(coin","player(nam","player.completedlevel(1","player.tracker.advancetolevel(6","playernam","playeron","playerone!.coinsinpurs","playerone!.wincoins(2_000","playerone变量设置为nil，意思是“没有player实例”。当这种情况发生的时候，playerone变量对player实例的引用被破坏了。没有其它属性或者变量引用play","playerone是可选的，所以由一个感叹号（!）来修饰，每当其wincoins方法被调用时，coinsinpurs","player实例存储在一个名为playerone的可选play","player类使用leveltrack","player类创建一个新的leveltracker实例来监测这个用户的发展进度。他提供了completedlevel方法：一旦玩家完成某个指定等级就调用它。这个方法为所有玩家解锁下一等级，并且将当前玩家的进度更新为下一等级。（我们忽略了advancetolevel返回的布尔值，因为之前调用leveltracker.unlocklevel","player类定义了一个wincoins方法，该方法从银行获取一定数量的硬币，并把它们添加到玩家的钱包。player类还实现了一个析构函数，这个析构函数在play","pleas","plu","plusminusvector","plusthre","pm","point","point(x","point.0","point.1","pointonefouronefivenin","point封装了一个(x","point来引用元组(int","point来表示square的中心点。如代码所示，它正确返回了中心点(5","point结构体定义了一个变异方法（mut","point（x","pop","pop并移除值"cuatro"","pop方法的返回值，该返回值将是一个t","posit","positiontofind","possibl","possibleinteg","possibleintegervalu","possiblenumb","possiblenumber.toint","possiblenumber.toint返回的可选int包含一个值，创建一个叫做actualnumb","possibleplanet","possiblestr","postfix","postfix-express","postfix-expression­.­decimal-digit","postfix-expression­.­dynamictyp","postfix-expression­.­identifier­generic-argument-clause(opt","postfix-expression­.­init","postfix-expression­.­self","postfix-expression­[­expression-list","postfix-expression­parenthesized-express","postfix-expression­parenthesized-expression­(opt)­trailing-closur","postfix-expression­postfix-oper","postfix-oper","postfix-operator-declar","postfix-self-express","potentialoverflow","powder","power","pp-prog","pp-prog告诉我，这几天太累了，校对到一半睡着了，醒来又继续做。2点17","preced","precedence-claus","precedence-clause­opt­associativity-clause­opt","precedence-level","precedence­precedence-level","precedence并优先级(preced","prefix","prefix-express","prefix-expression­binary-expressions(opt","prefix-oper","prefix-operator-declar","prefix存在时，将prefix插入到name之前来为starship构建fullnam","prefix）表达式，二元（binary）表达式，主要（primary）表达式和后缀（postfix）表达式。表达式可以返回一个值，以及运行某些逻辑（caus","preslei","prettytextrepresent","prettytextrepresentable协议的同时，也需要遵循textrepresent","prettytextrepresentable协议继承了textrepresent","primari","primary-express","prime","print","print(\"\\(codeunit","print(\"\\(scalar.valu","print(\"\\n","print(\"conson","print(\"oth","print(\"vowel","printandcount","printandcount(\"hello","printandcount(stringtoprint","printclassnam","printhelloworld","printletterkinds(\"hello","printletterkinds(word","printletterkinds的输入是一个string值并对其字符进行迭代。在每次迭代过程中，考虑当前字符的kind计算属性，并打印出合适的类别描述。所以printletterkinds就可以用来打印一个完整单词中所有字母的类型，正如上述单词"hello"","println","println(\"'\\\\(word","println(\"(0","println(\"(\\(point.0","println(\"(\\(somepoint.0","println(\"(\\(x","println(\"3的6倍是\\(threetimestable[6","println(\"\\(airportcod","println(\"\\(animalname)","println(\"\\(bas","println(\"\\(country.name)'","println(\"\\(currentvalu","println(\"\\(index","println(\"\\(mansioncount","println(\"\\(nam","println(\"\\(possiblenumb","println(\"\\(scalar","println(\"\\(somecharact","println(\"\\(total.vowel","println(\"a","println(\"about","println(\"access","println(\"ad","println(\"airport","println(\"al","println(\"an","println(\"and","println(\"apart","println(\"area","println(\"automaticcar","println(\"b","println(\"bicycl","println(\"car","println(\"card","println(\"cinema","println(\"count","println(\"eww","println(\"gam","println(\"goodby","println(\"happi","println(\"hd","println(\"hello","println(\"here'","println(\"highest","println(\"i'm","println(\"index","println(\"it","println(\"it'","println(\"item","println(\"john'","println(\"level","println(\"lot","println(\"media","println(\"mmm","println(\"mostli","println(\"movi","println(\"not","println(\"on","println(\"play","println(\"playeron","println(\"qr","println(\"random","println(\"result","println(\"rol","println(\"som","println(\"somebaseclass","println(\"someint","println(\"somesubclass","println(\"someth","println(\"somewher","println(\"song","println(\"speedlimitedcar","println(\"square.origin","println(\"start","println(\"tandem","println(\"tentighti","println(\"th","println(\"that","println(\"theaceofspad","println(\"ther","println(\"thes","println(\"thi","println(\"thre","println(\"un","println(\"unusualmenageri","println(\"upc-a","println(\"watch","println(\"welcom","println(\"wher","println(\"zero","println(a[0","println(ages[\"pet","println(assumedstr","println(audiochannel.maxinputlevelforallchannel","println(b[0","println(board.squareisblackatrow(0","println(board.squareisblackatrow(9","println(c[0","println(cat","println(charact","println(counter.count","println(d12.astext","println(definitestr","println(descript","println(friendlywelcom","println(game.asprettytext","println(game.astext","println(halfopenrangelength(1","println(item","println(item.descript","println(leftchannel.currentlevel","println(manager.importer.filenam","println(messag","println(name[0","println(paragraph!.ashtml","println(possiblestr","println(puzzleoutput","println(rightchannel.currentlevel","println(sayhello(\"anna","println(sayhello(\"brian","println(sayhelloagain(\"anna","println(sayhelloworld","println(someclass.computedtypeproperti","println(somestructure.storedtypeproperti","println(somethingtextrepresentable.astext","println(stringtoprint","println(text","println(thing.astext","println(“th","println函数输出传入的str","println（\"somebaseclass","println（\"somesubclass","printmathresult","printmathresult(addtwoint","printmathresult(mathfunct","printnumberofroom","prints\"hello","printwithoutcount","printwithoutcounting(\"hello","printwithoutcounting(stringtoprint","print（parent!.titl","print（self!.titl","print（self.titl","privat","procotol","productbarcod","productbarcode的新变量，并且赋给它一个barcode.upca的实例元组值(8","productcod","properit","properti","properties）构造器（initializers）方法（methods）修改实例方法（mut","properties），方法（methods），构造过程（initialization），扩展（extensions）和协议（protocol","property)在实例方法中修改值类型(modifi","property)还是计算型属性(calcul","property)，也能够要求属性的(设置权限)sett","property）还是计算型属性（comput","property），后者则把area写为存储型属性（stor","property），或附属脚本（subscript）提供自己定制的实现（implementation）。我们把这种行为叫重写（overrid","properyt","propetri","protocol","protocol<protocol","protocol<someprotocol","protocol-associated-type-declar","protocol-bodi","protocol-composition-typ","protocol-declar","protocol-identifi","protocol-identifier-list","protocol-initializer-declar","protocol-member-declar","protocol-member-declarations­opt","protocol-member-declaration­protocol-member-declarations­opt","protocol-method-declar","protocol-nam","protocol-property-declar","protocol-subscript-declar","protocol(item","repeatedvalu","repeatedvalue:0.0","repetit","repetitions(task","report","represent","requierd","requir","requirement-claus","requirement-list","requirement­,­requirement-list","reserv","reset","reset将计数器重置为0","resid","residence?属性，如果residence存在则取回numberofroom","residence中也提供了一个printnumberofroom","residence具有一个int类型的numberofroom","residence存储了一个room实例的数组，它的numberofrooms属性值不是一个固定的存储值，而是通过计算而来的。numberofrooms属性值是由返回rooms数组的count","residence定义了一个自判断属性叫address（address?）。address","residence实例给john.resid","residence实例给john.residence，且在他的rooms数组中有一个或多个room实例，那么你可以使用可选链通过residence子脚本来获取在room","residence属性numberofrooms属性值，将会引发运行时错误，因为这时没有可以供解析的resid","residence的printnumberofrooms方法会打印numberofroom","residence类中定义的子脚本来获取john.residence数组中第一个房间的名字。因为john.residence现在是nil","resolut","resolution()或videomod","resolution(width","resolution的结构体，用来描述一个显示器的像素分辨率。这个结构体包含了两个名为width和height的储存属性。储存属性是捆绑和储存在类或结构体中的常量或变量。当这两个属性被初始化为整数0的时候，它们会被推断为int","resolution结构体和videomode类的定义仅描述了什么是resolution和videomode。它们并没有描述一个特定的分辨率（resolution）或者视频模式（video","resolution（width:640","respond","respons","response声明为string?类型，或者说是可选字符串类型opt","result","result(str","result(sunris","retriev","return","return-stat","returnfifteen","returntyp","return时，仅仅是将控制权从该函数或方法传递给调用者，而不返回一个值。（这就是说，该函数或方法的返回类型为void","return语句后面带表达式时，表达式的值将会返回给调用者。如果表达式值的类型与调用者期望的类型不匹配，swift","return语句时，可以只写return这个关键词，也可以在return","return）\\r","return）或换行符（lin","return）（u+000d","revers","rh","rhsitem","rich","rick","ridlei","right","right-hand","right.i","right.x","rightchannel","rightchannel.currentlevel","rise","roll","roll方法用来模拟骰子的面值。它先使用generator的random方法来创建一个[0-1","romeoandjuliet","room","room(","room(nam","roomcount","rooms.count","rooms[i","rooms数组的room类是一个很简单的类，它只有一个name属性和一个设定room","rooms数组，resid","rooms，它被初始化为一个room","roraw获得，如exampleenum.b.toraw()。你也可以通过调用fromraw","row","row0","row1","rowheight","rowheight定义成变量，因为它的值无需在if","row和column的数量来构造一个新的matrix","row和column附属脚本的matrix","runingtotal变量的内存管理操作，如果不再被incrementor","runningtot","runningtotal增加amount","runningtotal的值，incrementor捕获了当前runningtotal变量的引用，而不是仅仅复制该变量的初始值。捕获一个引用保证了当makeincrementor结束时候并不会消失，也保证了当下一次执行incrementor函数时，runningtot","runtim","s","s1","s2","s2)，backwards函数返回true，表示在新的数组中s1应该出现在s2","s2)，该表达式返回bool类型值，因此这里没有歧义，return","safe","same","same-type-requir","samequot","sampl","sandwich","sankesandladders的实例都可以使用asprettytext","saturn","saygoodby","saygoodbye(\"dav","saygoodbye(personnam","sayhello","sayhello(personnam","sayhelloagain(personnam","sayhelloworld","sayhello。上面的例子展示的是用"anna"和"brian"","scalar","scarf","scene","scene.hasprefix(\"act","scene.hassuffix(\"capulet'","scene.hassuffix(\"friar","score","scott","second","secondforloop","secondnumb","secondvector","see","self","self-express","self.anm","self.area","self.artist","self.blu","self.capitalc","self.column","self.count","self.countri","self.custom","self.gener","self.green","self.greet","self.init(nam","self.init(origin","self.init在自定义的构造器中引用其它的属于相同值类型的构造器。并且你只能在构造器内部调用self.init","self.init（initi","self.leg","self.memb","self.nam","self.name)>\\(text)(somet","someresolut","someresolution.width","someresolution.width引用someresolution的width属性，返回width的初始值0","somestr","somestring变量通过字符串字面量进行初始化，swift","somestructur","somestructure.storedtypeproperti","somestructure等），以便符合标准swift","somesubclass","somesuperclass","somesupertyp","someth","somethingtextrepresent","sometuple的类型被指定为(doubl","sometuple：(doubl","sometyp","sometype(ofinitialvalu","sometypemethod","sometypeproperti","someu","somevalu","somevalue是一个标识符模式，匹配了类型是int的42","somevehicl","somevideomod","somevideomode.resolution.width","somevideomode中resolution属性的width这个子属性，以上操作并不需要从新设置resolut","song","song(nam","song.artist","song.nam","songcount","songcount，用来计算数组librari","song检查item是否为song类型的实例。在循环结束后，moviecount","sorri","sort","sort([1","sort(nam","sort函数对一个str","sort函数当排序结束后传入的第一个参数排在第二个参数前面还是后面。如果第一个参数值出现在第二个参数值前面，排序闭包函数需要返回true，反之返回fals","sort函数的参数进行传入的，swift","sort函数的整体调用保持不变，一对圆括号仍然包裹住了函数中整个参数集合。而其中一个参数现在变成了内联闭包（相比于backward","sort函数的第二个参数函数类型明确了闭包必须返回一个bool","sort期望第二个参数是类型为(str","soup","south","space","space）（u+0020）、换行符（lin","spade","sparklingheart","specifi","speed","speedlimitedcar","speedlimitedcar实例的speed属性时，属性setter的实现会去检查新值与限制值40mph的大小，它会将超类的speed设置为newvalue和40.0中较小的那个。这两个值哪个较小由min函数决定，它是swift标准库中的一个全局函数。min","speedlimitedcar实例的speed属性设置为一个大于40mph的数，然后打印description函数的输出，你会发现速度被限制在40mph","speedlimitedcar，它是car的子类。类speedlimitedcar表示安装了限速装置的车，它的最高速度只能达到40mph。你可以通过重写继承来的spe","spici","spider","spread","spread"，"cheese"，和"butter"替换为"bananas"","squar","square(sidelength","square.cent","square.origin","square.origin.i","square.origin.x","square.sidelength","squareisblackatrow(row","square增加board[square]的值向前或向后移动（遇到了梯子或者蛇）之前，检测square的值是否小于board的count","square的center属性可以通过点运算符（square.cent","square的rect实例，初始值原点是(0","src=\"https://developer.apple.com/library/prerelease/ios/documentation/swift/conceptual/swift_programming_language/art/barcode_qr_2x.png","src=\"https://developer.apple.com/library/prerelease/ios/documentation/swift/conceptual/swift_programming_language/art/barcode_upc_2x.png","src=\"https://developer.apple.com/library/prerelease/ios/documentation/swift/conceptual/swift_programming_language/art/computedproperties_2x.png","src=\"https://developer.apple.com/library/prerelease/ios/documentation/swift/conceptual/swift_programming_language/art/staticpropertiesvumeter_2x.png","stack","stack(inout","swaptwovalues例子中，占位类型t是一种类型参数的示例。类型参数指定并命名为一个占位类型，并且紧随在函数名后面，使用一对尖括号括起来（如