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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Posted by Michael McKinley
Michael McKinley
1,476 Points

I don't understand tuples

Please help me with this code!

tuples.swift 
func greeting(person: String) -> (language: String) {
    let language = "English"
    let greeting = "Hello \(person)"

    return greeting
}

1 Answer

Kevin Lozandier
PLUS
Kevin Lozandier
Courses Plus Student 53,747 Points
Kevin Lozandier
Kevin Lozandier
Courses Plus Student 53,747 Points

Hi,

To be brief, a tuple is a set of multiple variables being returned; with the rules Swift has regarding tuples, you have used the syntax to create a tuple that's labeled, but haven't met Swift's requirement of having that syntax (or rather such two concepts together) valid since your tuple only consists of one value.

As a result, you will get an error that it's a single element using a label that's not necessary or of any value since one value is being returned.

Also, It seems you have confused Swift's compiler regarding the intent of the greeting function: You claim that a variable of the name/label language will be returned by the function, but at the end of your function you have returned greeting.