有没有办法收集变量（值）从函数与agruments（参数），而不通过参数？
我提供了一个例子：
let userName =Jake let userInfo = test（name：userName） func test（name：String） - >字符串{ 返回名称} //函数调用 //目标：我想在不传递参数的情况下检索函数返回值让newUser = test（）是否必须存储函数'test'返回值检索它？ 我想检索'userName'Jake
解决方案您可以 return 像下面这样，
let userName =Jake//类的全局变量 let userInfo = test（）// Jake func test（） - >字符串{/ /单元素元组将不会有返回标签。 返回self.userName }如果您喜欢返回与标签然后您需要拖拽或更多返回值如下所示，
func test（） - > （name：String，age：Int）{ return（self.userName，125）}通过 test（）访问特定的值。name
Goal: I want to collect the return value of a function.
Question: How can I call the 'test' function to collect the return variable 'name' without passing through a parameter?
Is there a way to collect a variable(values) from functions with agruments(parameters) without passing through a parameter?
I have provided an example:
let userName = "Jake" let userInfo = test(name: userName) func test(name: String) -> String { return name } // function call // Goal: I want to retrieve the function return value without passing a parameter let newUser = test()Does the function 'test' return value have to be stored to retrieve it? I want to retrieve the 'userName' Jake
解决方案You can return like below,
let userName = "Jake" //Global variable of the class let userInfo = test() //Jake func test() -> String { //single - element tuple will don't have label for return. return self.userName }If you like to return with labels then you need tow or more return values like below,
func test() -> (name:String,age:Int) { return (self.userName,125) }And access specific values by test().name
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