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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Posted by Daniel Ferguson
Daniel Ferguson
1,850 Points

I dont understand what is wrong with my code? It compiles fine in xCode 6?

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

    var result = ("\(language)","\(greeting)")
    return result
}

var result = greeting("Tom")

2 Answers

Chris Shaw
Chris Shaw
26,676 Points

Hi Daniel,

Your current code has a couple of problems but overall you have the gist of what tuples are and how they work.

  1. Your return type is in the wrong order, greeting should be first then language
  2. You're using interpolation to assign the values to the tuple which isn't required as they're already strings.
func greeting(person: String) -> (greeting: String, language: String) {
    let language = "English"
    let greeting = "Hello \(person)"

    return (greeting, language)
}

Happy coding.

Daniel Ferguson
Daniel Ferguson
1,850 Points
Daniel Ferguson
Daniel Ferguson
1,850 Points

Thank you so much!

Chris Shaw
Chris Shaw
26,676 Points

No worries, if you're up for a bit of a read have a look at the below link, I go into a bit more detail about tuples.

https://teamtreehouse.com/forum/not-sure-on-the-tuple-question-ios-swift-to-modify-the-greeting-to-return-both-language-and-greeting