无法从 Swift 函数返回混合值类型

Question

我正在尝试编写一个接收 2 个参数（姓名、年龄）的简单函数并输出结果。

我想很简单，但我找不到正确的方法来查看类似的问题。

func sayHello(_ name:String, _ age:Int) -> (String, Int){
    return "hello " + name + " your are " + age + " years old";
}

var msg = sayHello("Ben",6);
print(msg);

我也试过了：

func sayHello(_ name:String, _ age:Int) -> (String, Int){
    return "hello \(name) your are \(age) years old";
}

var msg = sayHello("Ben",6);
print(msg);

Answer 1

你需要return一个String，而不是(String, Int)。试试这个：

func sayHello(_ name:String, _ age:Int) -> String {
    return "hello \(name) your are \(age) years old"
}
var msg = sayHello("Ben",6)
print(msg)

无法从 Swift 函数返回混合值类型

Trouble returning mixed values types from Swift function

swift

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