//元组 tuple

let tuple = (erroString:"错误信息",errorType:404)

var tupleVar = (errorString:"错误信息",errorType:404)

var tupleVar_ = ("错误信息",404)

tuple.erroString

tuple.errorType

tuple.0

tuple.1

var tupleTemp = tupleVar

tupleTemp.0 = "正确信息"

//tupleTemp.0 = 1111 这是错误的不能改变数据类型

tupleVar //(.0 "错误信息",.1 404)

tupleTemp //(.0 "正确信息",.1 404)

/*

*/