From bfaa2367d88e0dca43f90432d49c5b2c58ff37a0 Mon Sep 17 00:00:00 2001 From: numbbbbb Date: Mon, 9 Jun 2014 22:19:55 +0800 Subject: [PATCH] correct the error translate in enum --- chapter1/01_swift.html | 4 +- chapter1/02_a_swift_tour.html | 4 +- chapter1/chapter1.html | 4 +- chapter2/01_The_Basics.html | 4 +- chapter2/02_Basic_Operators.html | 4 +- chapter2/03_Strings_and_Characters.html | 4 +- chapter2/04_Collection_Types.html | 4 +- chapter2/05_Control_Flow.html | 4 +- chapter2/06_Functions.html | 4 +- chapter2/07_Closures.html | 4 +- chapter2/08_Enumerations.html | 32 +++++------ chapter2/09_Classes_and_Structures.html | 4 +- chapter2/10_Properties.html | 4 +- chapter2/11_Methods.html | 4 +- chapter2/12_Subscripts.html | 4 +- chapter2/13_Inheritance.html | 4 +- chapter2/14_Initialization.html | 2 +- chapter2/15_Deinitialization.html | 4 +- chapter2/16_Automatic_Reference_Counting.html | 4 +- chapter2/17_Optional_Chaining.html | 4 +- chapter2/18_Type_Casting.html | 4 +- chapter2/19_Nested_Types.html | 4 +- chapter2/20_Extensions.html | 4 +- chapter2/21_Protocols.html | 4 +- chapter2/22_Generics.html | 4 +- chapter2/23_Advanced_Operators.html | 2 +- chapter2/chapter2.html | 4 +- chapter3/01_About_the_Language_Reference.html | 4 +- chapter3/02_Lexical_Structure.html | 4 +- chapter3/03_Types.html | 4 +- chapter3/04_Expressions.html | 2 +- chapter3/05_Declarations.html | 2 +- chapter3/06_Attributes.html | 4 +- chapter3/07_Patterns.html | 2 +- .../08_Generic_Parameters_and_Arguments.html | 2 +- chapter3/09_Summary_of_the_Grammar.html | 2 +- chapter3/10_Statements.html | 4 +- chapter3/chapter3.html | 2 +- index.html | 4 +- manifest.appcache | 8 +-- search_index.json | 2 +- source/chapter2/08_Enumerations.md | 54 +++++++++---------- 42 files changed, 116 insertions(+), 116 deletions(-) diff --git a/chapter1/01_swift.html b/chapter1/01_swift.html index 41b85c85..41e5d6e0 100644 --- a/chapter1/01_swift.html +++ b/chapter1/01_swift.html @@ -46,7 +46,7 @@ -
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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。

diff --git a/chapter1/02_a_swift_tour.html b/chapter1/02_a_swift_tour.html index 23248c1c..300724de 100644 --- a/chapter1/02_a_swift_tour.html +++ b/chapter1/02_a_swift_tour.html @@ -46,7 +46,7 @@ -
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Swift 初见

本页内容包括：

diff --git a/chapter1/chapter1.html b/chapter1/chapter1.html index 81d9534d..e5dd06b2 100644 --- a/chapter1/chapter1.html +++ b/chapter1/chapter1.html @@ -46,7 +46,7 @@ -
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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 a9326bad..761a0934 100644 --- a/chapter2/01_The_Basics.html +++ b/chapter2/01_The_Basics.html @@ -46,7 +46,7 @@ -
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基础部分

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。

diff --git a/chapter2/02_Basic_Operators.html b/chapter2/02_Basic_Operators.html index b32ba75d..5f4bf56a 100644 --- a/chapter2/02_Basic_Operators.html +++ b/chapter2/02_Basic_Operators.html @@ -46,7 +46,7 @@ -
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基础运算符

运算符是检查, 改变, 合并值的特殊符号或短语. 例如, 加号 + 把计算两个数的和(如 let i = 1 + 2). 复杂些的运行算包括逻辑与&&(如 if enteredDoorCode && passedRetinaScan), 还有自增运算符 ++i 这样让自身加一的便捷运算.

diff --git a/chapter2/03_Strings_and_Characters.html b/chapter2/03_Strings_and_Characters.html index 6d96b6b5..6b6cda23 100644 --- a/chapter2/03_Strings_and_Characters.html +++ b/chapter2/03_Strings_and_Characters.html @@ -46,7 +46,7 @@ -
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字符串和字符 (Strings and Characters)

本页包含内容：

diff --git a/chapter2/04_Collection_Types.html b/chapter2/04_Collection_Types.html index cd55fe5b..dc7147b8 100644 --- a/chapter2/04_Collection_Types.html +++ b/chapter2/04_Collection_Types.html @@ -46,7 +46,7 @@ -
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集合类型 (Collection Types)

diff --git a/chapter2/05_Control_Flow.html b/chapter2/05_Control_Flow.html index 8386576b..f32b3380 100644 --- a/chapter2/05_Control_Flow.html +++ b/chapter2/05_Control_Flow.html @@ -46,7 +46,7 @@ -
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控制流

Swift提供了类似C语言的流程控制结构，包括将任务执行多次的for和while循环，基于特定条件选择执行不同分支的if和switch语句，还有控制流程跳转到其他代码的break和continue语句。

diff --git a/chapter2/06_Functions.html b/chapter2/06_Functions.html index 898dc2a3..a9b550c0 100644 --- a/chapter2/06_Functions.html +++ b/chapter2/06_Functions.html @@ -46,7 +46,7 @@ -
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函数（Functions）

本页包含内容：

diff --git a/chapter2/07_Closures.html b/chapter2/07_Closures.html index bcd5f88a..34488633 100644 --- a/chapter2/07_Closures.html +++ b/chapter2/07_Closures.html @@ -46,7 +46,7 @@ -
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闭包

本页内容包含：

diff --git a/chapter2/08_Enumerations.html b/chapter2/08_Enumerations.html index b754810f..5c15eacc 100644 --- a/chapter2/08_Enumerations.html +++ b/chapter2/08_Enumerations.html @@ -46,7 +46,7 @@ -
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枚举

本页内容包含：

  • 枚举语法
  • 匹配枚举值与Swith语句
    • -
  • 实例值（associated values）
    • +
  • 关联值（associated values）
  • 原始值（raw values）

枚举（enumeration）定义了一个通用类型的一组相关的值，使你可以在你的代码中以一个安全的方式来使用这些值。

如果你熟悉C语言，你就会知道，在C语言中枚举指定相关名称为一组整型值。Swift中的枚举更加灵活，不必给每一个枚举成员（enumeration member）提供一个值。如果一个值（被认为是“原始”值）被提供给每个枚举成员，则该值可以是一个字符串，一个字符，或是一个整型值或浮点值。

-

此外，枚举成员可以指定任何类型的实例值存储到枚举成员值中，就像其他语言中的联合体（unions）和变体（variants）。你可以定义一组通用的相关成员作为枚举的一部分，每一组都有不同的一组与它相关的适当类型的数值。

-

在Swift中，枚举类型是一等（first-class）类型。它们采用了很多传统上只被类（class)所支持的特征，例如计算型属性（computed properties)，用于提供关于枚举当前值的附加信息， 实例方法（instance methods），用于提供和枚举所代表的值相关联的功能。枚举也可以定义构造函数（initializers）来提供一个初始成员值；可以在原始的实现基础上扩展它们的功能；可以遵守协议（protocols）来提供标准的功能。

+

此外，枚举成员可以指定任何类型的关联值存储到枚举成员值中，就像其他语言中的联合体（unions）和变体（variants）。你可以定义一组通用的相关成员作为枚举的一部分，每一组都有不同的一组与它相关的适当类型的数值。

+

在Swift中，枚举类型是一等（first-class）类型。它们采用了很多传统上只被类（class)所支持的特征，例如计算型属性（computed properties)，用于提供关于枚举当前值的附加信息，实例方法（instance methods），用于提供和枚举所代表的值相关联的功能。枚举也可以定义构造函数（initializers）来提供一个初始成员值；可以在原始的实现基础上扩展它们的功能；可以遵守协议（protocols）来提供标准的功能。

欲了解更多相关功能，请参见属性（Properties），方法（Methods），构造过程（Initialization），扩展（Extensions），和协议（Protocols）。

枚举语法

使用enum关键词并且把它们的整个定义放在一对大括号内：

@@ -655,9 +655,9 @@ default: println("Not a safe place for humans") } // prints "Mostly harmless” -

实例值（Associated Values）

-

上一小节的例子演示了一个枚举的成员是如何被定义（分类）的。你可以为Planet.Earth设置一个常量或则变量，并且在之后查看这个值。然而，有时候会很有用如果能够把其他类型的实例值和成员值一起存储起来。这能让你随着成员值存储额外的自定义信息，并且当每次你在代码中利用该成员时允许这个信息产生变化。

-

你可以定义Swift的枚举存储任何类型的实例值，如果需要的话，每个成员的数据类型可以是各不相同的。枚举的这种特性跟其他语言中的可辨识联合（discriminated unions），标签联合（tagged unions），或者变体（variants）相似。

+

关联值（Associated Values）

+

上一小节的例子演示了一个枚举的成员是如何被定义（分类）的。你可以为Planet.Earth设置一个常量或则变量，并且在之后查看这个值。然而，有时候会很有用如果能够把其他类型的关联值和成员值一起存储起来。这能让你随着成员值存储额外的自定义信息，并且当每次你在代码中利用该成员时允许这个信息产生变化。

+

你可以定义Swift的枚举存储任何类型的关联值，如果需要的话，每个成员的数据类型可以是各不相同的。枚举的这种特性跟其他语言中的可辨识联合（discriminated unions），标签联合（tagged unions），或者变体（variants）相似。

例如，假设一个库存跟踪系统需要利用两种不同类型的条形码来跟踪商品。有些商品上标有UPC-A格式的一维码，它使用数字0到9.每一个条形码都有一个代表“数字系统”的数字，该数字后接10个代表“标识符”的数字。最后一个数字是“检查”位，用来验证代码是否被正确扫描：

其他商品上标有QR码格式的二维码，它可以使用任何ISO8859-1字符，并且可以编码一个最多拥有2,953字符的字符串:

@@ -669,15 +669,15 @@ default: case QRCode(String) }

以上代码可以这么理解：

-

“定义一个名为Barcode的枚举类型，它可以是UPCA的一个实例值（Int，Int，Int），或者QRCode的一个字符串类型（String）实例值。”

-

这个定义不提供任何Int或String的实际值，它只是定义了，当Barcode常量和变量等于Barcode.UPCA或Barcode.QRCode时，实例值的类型。

+

“定义一个名为Barcode的枚举类型，它可以是UPCA的一个关联值（Int，Int，Int），或者QRCode的一个字符串类型（String）关联值。”

+

这个定义不提供任何Int或String的实际值，它只是定义了，当Barcode常量和变量等于Barcode.UPCA或Barcode.QRCode时，关联值的类型。

然后可以使用任何一种条码类型创建新的条码，如：

var productBarcode = Barcode.UPCA(8, 85909_51226, 3)
-

以上例子创建了一个名为productBarcode的新变量，并且赋给它一个Barcode.UPCA的实例元组值(8, 8590951226, 3)。提供的“标识符”值在整数字中有一个下划线，使其便于阅读条形码。

+

以上例子创建了一个名为productBarcode的新变量，并且赋给它一个Barcode.UPCA的关联元组值(8, 8590951226, 3)。提供的“标识符”值在整数字中有一个下划线，使其便于阅读条形码。

同一个商品可以被分配给一个不同类型的条形码，如：

productBarcode = .QRCode("ABCDEFGHIJKLMNOP")
-

这时，原始的Barcode.UPCA和其整数值被新的Barcode.QRCode和其字符串值所替代。条形码的常量和变量可以存储一个.UPCA或者一个.QRCode（连同它的实例值），但是在任何指定时间只能存储其中之一。

-

像以前那样，不同的条形码类型可以使用一个switch语句来检查，然而这次实例值可以被提取作为switch语句的一部分。你可以在switch的case分支代码中提取每个实例值作为一个常量（用let前缀）或者作为一个变量（用var前缀）来使用：

+

这时，原始的Barcode.UPCA和其整数值被新的Barcode.QRCode和其字符串值所替代。条形码的常量和变量可以存储一个.UPCA或者一个.QRCode（连同它的关联值），但是在任何指定时间只能存储其中之一。

+

像以前那样，不同的条形码类型可以使用一个switch语句来检查，然而这次关联值可以被提取作为switch语句的一部分。你可以在switch的case分支代码中提取每个关联值作为一个常量（用let前缀）或者作为一个变量（用var前缀）来使用：

switch productBarcode {
 case .UPCA(let numberSystem, let identifier, let check):
     println("UPC-A with value of \(numberSystem), \(identifier), \(check).")
@@ -685,7 +685,7 @@ case .QRCode(let productCode):
     println("QR code with value of \(productCode).")
 }
 // prints "QR code with value of ABCDEFGHIJKLMNOP.”
-

如果一个枚举成员的所有实例值被提取为常量，或者它们全部被提取为变量，为了简洁，你可以只放置一个var或者let标注在成员名称前：

+

如果一个枚举成员的所有关联值被提取为常量，或者它们全部被提取为变量，为了简洁，你可以只放置一个var或者let标注在成员名称前：

switch productBarcode {
 case let .UPCA(numberSystem, identifier, check):
     println("UPC-A with value of \(numberSystem), \(identifier), \(check).")
@@ -694,7 +694,7 @@ case let .QRCode(productCode):
 }
 // prints "QR code with value of ABCDEFGHIJKLMNOP."

原始值（Raw Values）

-

在实例值小节的条形码例子中演示了一个枚举的成员如何声明它们存储不同类型的实例值。作为实例值的替代，枚举成员可以被默认值（称为原始值）预先填充，其中这些原始值具有相同的类型。

+

在关联值小节的条形码例子中演示了一个枚举的成员如何声明它们存储不同类型的关联值。作为关联值的替代，枚举成员可以被默认值（称为原始值）预先填充，其中这些原始值具有相同的类型。

这里是一个枚举成员存储原始ASCII值的例子：

enum ASCIIControlCharacter: Character {
     case Tab = "\t"
@@ -702,7 +702,7 @@ case let .QRCode(productCode):
     case CarriageReturn = "\r"
 }

在这里，称为ASCIIControlCharacter的枚举的原始值类型被定义为字符型Character，并被设置了一些比较常见的ASCII控制字符。字符值的描述请详见字符串和字符Strings and Characters部分。

-

注意，原始值和实例值是不相同的。当你开始在你的代码中定义枚举的时候原始值是被预先填充的值，像上述三个ASCII码。对于一个特定的枚举成员，它的原始值始终是相同的。实例值是当你在创建一个基于枚举成员的新常量或变量时才会被设置，并且每次当你这么做得时候，它的值可以是不同的。

+

注意，原始值和关联值是不相同的。当你开始在你的代码中定义枚举的时候原始值是被预先填充的值，像上述三个ASCII码。对于一个特定的枚举成员，它的原始值始终是相同的。关联值是当你在创建一个基于枚举成员的新常量或变量时才会被设置，并且每次当你这么做得时候，它的值可以是不同的。

原始值可以是字符串，字符，或者任何整型值或浮点型值。每个原始值在它的枚举声明中必须是唯一的。当整型值被用于原始值，如果其他枚举成员没有值时，它们会自动递增。

下面的枚举是对之前Planet这个枚举的一个细化，利用原始整型值来表示每个planet在太阳系中的顺序：

enum Planet: Int {
diff --git a/chapter2/09_Classes_and_Structures.html b/chapter2/09_Classes_and_Structures.html
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类和结构体

 
本页包含内容：

diff --git a/chapter2/10_Properties.html b/chapter2/10_Properties.html
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属性 (Properties)

 
属性将值跟特定的类、结构或枚举关联。一种是存储属性，把常量或变量的值作为实例的一部分，一种是计算属性，它计算一个值。计算属性可以用于类、结构和枚举里，存储属性只能用于类和结构。

diff --git a/chapter2/11_Methods.html b/chapter2/11_Methods.html
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方法(Methods)

 
方法是与某些特定类型相关联的功能/函数。类、结构体、枚举都可以定义实例方法；实例方法为指定类型的实例封装了特定的任务与功能。类、结构体、枚举也可以定义类(型)方法(type itself)；类型方法与类型自身相关联。类型方法与Objective-C中的类方法(class methods)相似。

diff --git a/chapter2/12_Subscripts.html b/chapter2/12_Subscripts.html
index 279b715a..6a7e27d1 100644
--- a/chapter2/12_Subscripts.html
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下标 (Subscripts)

 
下标可以定义在类(Class)、结构体(structures)和枚举(enumerations)这些目标中，可以认为是访问对象、集合或序列的快捷方式。举例来说，用下标访问一个数组(Array)实例中的元素可以这样写 someArray[index] ，访问字典(Dictionary)实例中的元素可以这样写 someDictionary[key]，而不需要再调用实例的某个方法来获得元素的值。

diff --git a/chapter2/13_Inheritance.html b/chapter2/13_Inheritance.html
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继承

 
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。

diff --git a/chapter2/14_Initialization.html b/chapter2/14_Initialization.html
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diff --git a/chapter2/15_Deinitialization.html b/chapter2/15_Deinitialization.html
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析构过程

 
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。

diff --git a/chapter2/16_Automatic_Reference_Counting.html b/chapter2/16_Automatic_Reference_Counting.html
index 30952456..c02ac20a 100644
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自动引用计数

 
本页包含内容：

diff --git a/chapter2/17_Optional_Chaining.html b/chapter2/17_Optional_Chaining.html
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Optional Chaining

 
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（nil）。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（nil），则这种调用将返回空（nil）。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（nil）将导致整个链失效。

diff --git a/chapter2/18_Type_Casting.html b/chapter2/18_Type_Casting.html
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类型检查（Type Casting）

 
（ps：为了方便各位检验所以保留了英文，可删。）
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类型嵌套

 
本页包含内容：

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扩展（Extensions）

 

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协议

 
Protocol(协议)定义了用于完成某项任务或功能的方法,属性等,它不具备任何功能的细节实现,只用来统一方法,属性等的名称和其类型.(译者注: 其他语言中也把 Portocol 称为 Interface(接口) ).协议可以被类,枚举,结构体采纳并实现,任意满足了协议要求的类,枚举,结构体被称之为协议遵循者.

diff --git a/chapter2/22_Generics.html b/chapter2/22_Generics.html
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泛型

 

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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
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关于语言附注

 
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。

diff --git a/chapter3/02_Lexical_Structure.html b/chapter3/02_Lexical_Structure.html
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语法结构

 
本页包含内容：

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类型（Types）

 

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特性

 
特性提供了关于声明和类型的更多信息。在Swift中有两类特性，用于修饰声明的以及用于修饰类型的。例如，required特性，当应用于一个类的指定或便利初始化器声明时，表明它的每个子类都必须实现那个初始化器。再比如noreturn特性，当应用于函数或方法类型时，表明该函数或方法不会返回到它的调用者。

diff --git a/chapter3/07_Patterns.html b/chapter3/07_Patterns.html
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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。

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Swift 编程语言

 
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》。

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注意：
@@ -44,7 +44,7 @@
 	enum Planet {
 		case Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Nepturn
 	}
-	
+
 每个枚举定义了一个全新的类型。像Swift中其他类型一样，它们的名字（例如`CompassPoint`和`Planet`）必须以一个大写字母开头。给枚举类型起一个单数名字而不是复数名字，以便于读起来更加容易理解：
 
 	var directionToHead = CompassPoint.West
@@ -52,7 +52,7 @@
 `directionToHead`的类型被推断当它被`CompassPoint`的一个可能值初始化。一旦`directionToHead`被声明为一个`CompassPoint`，你可以使用更短的点（.）语法将其设置为另一个`CompassPoint`的值：
 
 	directionToHead = .East
-	
+
 `directionToHead`的类型已知时，当设定它的值时，你可以不再写类型名。使用显示类型的枚举值可以让代码具有更好的可读性。
 
 ## 匹配枚举值和`Switch`语句
@@ -91,11 +91,11 @@
 	}
 	// prints "Mostly harmless”
 
-## 实例值（Associated Values）
+## 关联值（Associated Values）
 
-上一小节的例子演示了一个枚举的成员是如何被定义（分类）的。你可以为`Planet.Earth`设置一个常量或则变量，并且在之后查看这个值。然而，有时候会很有用如果能够把其他类型的实例值和成员值一起存储起来。这能让你随着成员值存储额外的自定义信息，并且当每次你在代码中利用该成员时允许这个信息产生变化。
+上一小节的例子演示了一个枚举的成员是如何被定义（分类）的。你可以为`Planet.Earth`设置一个常量或则变量，并且在之后查看这个值。然而，有时候会很有用如果能够把其他类型的关联值和成员值一起存储起来。这能让你随着成员值存储额外的自定义信息，并且当每次你在代码中利用该成员时允许这个信息产生变化。
 
-你可以定义Swift的枚举存储任何类型的实例值，如果需要的话，每个成员的数据类型可以是各不相同的。枚举的这种特性跟其他语言中的可辨识联合（discriminated unions），标签联合（tagged unions），或者变体（variants）相似。
+你可以定义Swift的枚举存储任何类型的关联值，如果需要的话，每个成员的数据类型可以是各不相同的。枚举的这种特性跟其他语言中的可辨识联合（discriminated unions），标签联合（tagged unions），或者变体（variants）相似。
 
 例如，假设一个库存跟踪系统需要利用两种不同类型的条形码来跟踪商品。有些商品上标有UPC-A格式的一维码，它使用数字0到9.每一个条形码都有一个代表“数字系统”的数字，该数字后接10个代表“标识符”的数字。最后一个数字是“检查”位，用来验证代码是否被正确扫描：
 
@@ -116,23 +116,23 @@
 
 以上代码可以这么理解：
 
-“定义一个名为`Barcode`的枚举类型，它可以是`UPCA`的一个实例值（`Int`，`Int`，`Int`），或者`QRCode`的一个字符串类型（`String`）实例值。”
+“定义一个名为`Barcode`的枚举类型，它可以是`UPCA`的一个关联值（`Int`，`Int`，`Int`），或者`QRCode`的一个字符串类型（`String`）关联值。”
 
-这个定义不提供任何`Int`或`String`的实际值，它只是定义了，当`Barcode`常量和变量等于`Barcode.UPCA`或`Barcode.QRCode`时，实例值的类型。
+这个定义不提供任何`Int`或`String`的实际值，它只是定义了，当`Barcode`常量和变量等于`Barcode.UPCA`或`Barcode.QRCode`时，关联值的类型。
 
 然后可以使用任何一种条码类型创建新的条码，如：
-	
+
 	var productBarcode = Barcode.UPCA(8, 85909_51226, 3)
-	
-以上例子创建了一个名为`productBarcode`的新变量，并且赋给它一个`Barcode.UPCA`的实例元组值`(8, 8590951226, 3)`。提供的“标识符”值在整数字中有一个下划线，使其便于阅读条形码。
+
+以上例子创建了一个名为`productBarcode`的新变量，并且赋给它一个`Barcode.UPCA`的关联元组值`(8, 8590951226, 3)`。提供的“标识符”值在整数字中有一个下划线，使其便于阅读条形码。
 
 同一个商品可以被分配给一个不同类型的条形码，如：
 
 	productBarcode = .QRCode("ABCDEFGHIJKLMNOP")
-	
-这时，原始的`Barcode.UPCA`和其整数值被新的`Barcode.QRCode`和其字符串值所替代。条形码的常量和变量可以存储一个`.UPCA`或者一个`.QRCode`（连同它的实例值），但是在任何指定时间只能存储其中之一。
 
-像以前那样，不同的条形码类型可以使用一个switch语句来检查，然而这次实例值可以被提取作为switch语句的一部分。你可以在`switch`的case分支代码中提取每个实例值作为一个常量（用`let`前缀）或者作为一个变量（用`var`前缀）来使用：
+这时，原始的`Barcode.UPCA`和其整数值被新的`Barcode.QRCode`和其字符串值所替代。条形码的常量和变量可以存储一个`.UPCA`或者一个`.QRCode`（连同它的关联值），但是在任何指定时间只能存储其中之一。
+
+像以前那样，不同的条形码类型可以使用一个switch语句来检查，然而这次关联值可以被提取作为switch语句的一部分。你可以在`switch`的case分支代码中提取每个关联值作为一个常量（用`let`前缀）或者作为一个变量（用`var`前缀）来使用：
 
 	switch productBarcode {
 	case .UPCA(let numberSystem, let identifier, let check):
@@ -141,8 +141,8 @@
     	println("QR code with value of \(productCode).")
 	}
 	// prints "QR code with value of ABCDEFGHIJKLMNOP.”
-	
-如果一个枚举成员的所有实例值被提取为常量，或者它们全部被提取为变量，为了简洁，你可以只放置一个`var`或者`let`标注在成员名称前：
+
+如果一个枚举成员的所有关联值被提取为常量，或者它们全部被提取为变量，为了简洁，你可以只放置一个`var`或者`let`标注在成员名称前：
 
 	switch productBarcode {
 	case let .UPCA(numberSystem, identifier, check):
@@ -154,7 +154,7 @@
 
 ## 原始值（Raw Values）
 
-在实例值小节的条形码例子中演示了一个枚举的成员如何声明它们存储不同类型的实例值。作为实例值的替代，枚举成员可以被默认值（称为原始值）预先填充，其中这些原始值具有相同的类型。
+在关联值小节的条形码例子中演示了一个枚举的成员如何声明它们存储不同类型的关联值。作为关联值的替代，枚举成员可以被默认值（称为原始值）预先填充，其中这些原始值具有相同的类型。
 
 这里是一个枚举成员存储原始ASCII值的例子：
 
@@ -163,10 +163,10 @@
     	case LineFeed = "\n"
     	case CarriageReturn = "\r"
 	}
-	
+
 在这里，称为`ASCIIControlCharacter`的枚举的原始值类型被定义为字符型`Character`，并被设置了一些比较常见的ASCII控制字符。字符值的描述请详见字符串和字符`Strings and Characters`部分。
 
-注意，原始值和实例值是不相同的。当你开始在你的代码中定义枚举的时候原始值是被预先填充的值，像上述三个ASCII码。对于一个特定的枚举成员，它的原始值始终是相同的。实例值是当你在创建一个基于枚举成员的新常量或变量时才会被设置，并且每次当你这么做得时候，它的值可以是不同的。
+注意，原始值和关联值是不相同的。当你开始在你的代码中定义枚举的时候原始值是被预先填充的值，像上述三个ASCII码。对于一个特定的枚举成员，它的原始值始终是相同的。关联值是当你在创建一个基于枚举成员的新常量或变量时才会被设置，并且每次当你这么做得时候，它的值可以是不同的。
 
 原始值可以是字符串，字符，或者任何整型值或浮点型值。每个原始值在它的枚举声明中必须是唯一的。当整型值被用于原始值，如果其他枚举成员没有值时，它们会自动递增。
 
@@ -175,19 +175,19 @@
 	enum Planet: Int {
     	case Mercury = 1, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
 	}
-	
+
 自动递增意味着`Planet.Venus`的原始值是`2`，依次类推。
 
 使用枚举成员的`toRaw`方法可以访问该枚举成员的原始值：
 
 	let earthsOrder = Planet.Earth.toRaw()
 	// earthsOrder is 3
-	
+
 使用枚举的`fromRaw`方法来试图找到具有特定原始值的枚举成员。这个例子通过原始值`7`识别`Uranus`：
 
 	let possiblePlanet = Planet.fromRaw(7)
 	// possiblePlanet is of type Planet? and equals Planet.Uranus
-	
+
 然而，并非所有可能的`Int`值都可以找到一个匹配的行星。正因为如此，`fromRaw`方法可以返回一个***可选***的枚举成员。在上面的例子中，`possiblePlanet`是`Planet?`类型，或“可选的`Planet`”。
 
 如果你试图寻找一个位置为9的行星，通过`fromRaw`返回的可选`Planet`值将是`nil`：
@@ -204,5 +204,5 @@
     	println("There isn't a planet at position \(positionToFind)")
 	}
 	// prints "There isn't a planet at position 9
-	
-这个范例使用可选绑定（optional binding），通过原始值`9`试图访问一个行星。`if let somePlanet = 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`else`分支被执行。
\ No newline at end of file
+
+这个范例使用可选绑定（optional binding），通过原始值`9`试图访问一个行星。`if let somePlanet = 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`else`分支被执行。