Swift分解成单个变量
示例
可以使用以下语法将元组分解为单个变量：
let myTuple = (name: "Some Name", age: 26) let (first, second) = myTuple print(first) // "Some Name" print(second) //26
无论元组是否具有未命名的属性，都可以使用此语法：
let unnamedTuple = ("uno", "dos")
let (one, two) = unnamedTuple
print(one) // "uno"
print(two) // "dos"可以使用下划线（_）忽略特定属性：
let longTuple = ("ichi", "ni", "san")
let (_, _, third) = longTuple
print(third) // "san"