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对应最新发布《The Swift Programming Language》Swift 2.0 一书中的内容。这些playground基本是书中知识点的一个总结。

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1.错误位置 if value < currentMin { currentMin = value } else { currentMax = value } } 2.个人的更改方法 //1.方法一 for index in 0.. currentMax { currentMax = tem } }...

Obj-C可以通过Property或者带有下划线“_”前缀的实例变量对该变量进行赋值或读取,而Swift同一了这两种方式,只能通过点运算符对Property进行赋值或读取,而不能使用下划线“_”前缀的实例变量进行这两项操作。 如: Obj-c: ``` Objective-C @property (nonatomic, assign) BOOL isTrue; self.isTrue = YES; _isTrue = YES; ``` Swift: ``` Swift var isTrue: Bool self.isTrue = true // _isTrue = true...