IOS 开发之Swift 元组的实例详解

//普通声明var point = (5,2)var httpResponse = (404, "Not Found")//定义类型声明var point2 : (Int,Int,Int) = (10,5,2)var httpResponse2 : (Int,String) = (200,"ok")

var point = (5,2)var httpResponse = (404, "Not Found")let (x,y) = point// x = 5 , y = 2var (statuseCode, statuseMessage) = httpResponse// statuseCode = 404 , statuseMessage = "Not Found"//此时因为元组(x,y)是let 类型的，所以x和y的值不能改变；而(statuseCode, statuseMessage)是var类型的所以statuseCode和statuseMessage的值可以改变x = 10 //举报错statuseCode = 405//不报错

var point = (5,2)point.0 //值为5point.1 //值为2

let point3 = (x:3,y:2)point3.0 //值为3point3.x //值为3let point4 : (x:Int,y:Int) = (5,10)point4.x //值为5point4.y //值为10

//部分解包let loginResult = (true, "LXY")let (isLoginSuccess,_) = loginResultif isLoginSuccess{}