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 = 2

var (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5
point.1 //值为2

let point3 = (x:3,y:2)

point3.0 //值为3

point3.x //值为3


let point4 : (x:Int,y:Int) = (5,10)


point4.x //值为5

point4.y //值为10

//部分解包

let loginResult = (true, "LXY")

let (isLoginSuccess,_) = loginResult

if isLoginSuccess
{

}