1.swift_初体验

Swift 初体验

与原本的Objective - C相比, Swift的语法就显得简单的许多

创建一个对象

Swift

let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))

Objective-C

UIView *view = [[UIView alloc] init]

More

创建对象 OC - alloc / initWithXXXX Swift - (XXX : )

调用方法 OC - [UIColor blackColor]; Swift - UIColor.blackColor()

枚举 OC - UIButtonTypeContactAdd Swift - UIButtonType.ContactAdd

∆ - 枚举名称变量可以省略,开发中一般不建议省略，目的方便阅读 .ContactAdd

创建结构体 OC - CGPointMake() Swift - CGPoint(x: 50, y: 50)