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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Posted by Sameer Saxena
Sameer Saxena
3,186 Points

I do not understand what I am doing wrong with Swift tuples. I put (greeting, language) in a var tuple and returned it.

If you see the code, I do not know what I am doing wrong. Should I use string interpolation, is there something I am not using that I should be using? Please tell me. Thank you!

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

    var tuple = (greeting, language)
    return tuple

}

1 Answer

Kenneth Luba
Kenneth Luba
9,781 Points
Kenneth Luba
Kenneth Luba
9,781 Points

Sameer:

It seems that you are getting a bit confused on what var and return do in the tuple. You are attempting to decompose the tuple so here goes:

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

        return (greeting, language)
}

var tuple = greeting("Tom")

The first thing that you want to note is that you need to specify which values in your return you are referring to. Set the values for (String, String) as (language, greeting) and add a colon after each. Now, set the return to these values (greeting, language) and, set your tuple variable to call the greeting and pass in the string "Tom". If you put this code in Xcode you'll see the output. Hope this helps.

Kenny