July 8th , 2016 Swift语法介绍: 运算符 基本运算符let a = 1let b = 2var c = a + bvar d = a - bvar e = a * bvar f1 = a / b//强制类型转换var f2 = Doub...
July 8th , 2016 Swift语法介绍: 常量与变量 常量//指定常量的类型let a:Int = 1let b:Double = 3.14let isSuccess:Bool = truelet aString:String = "He...