Code Challenge: Tuples

Matt's clues helped me work this out. I was stuck on challenge 3 of 3 but this is what I finally got that passed.

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

    return (greeting, language)
}

  var result = greeting("Tom")
println(result.language)

Hi Eric,

This challenge starts out by asking you to change the return type of the function to use a tuple. The tuple returned will consist of two String items named greeting and language.

You can name items in a tuple by specifying the name, then a semi-colon, followed by the type. For example:

(foo: String, bar: String)

This tuple has two String items named foo and bar.

Apply this concept to update the return type on the function.

Once you've done that, update the return statement at the end of the function to return a tuple. For example:

let fooValue = "Hello"
let barValue = "Bye"

return (fooValue, barValue)

Here the first value (fooValue) is assigned to the tuple item named foo and the second (barValue) to bar. Use this patten to update the return statement of the function and complete the first step of the code challenge.

You will then be asked to create a new variable called result and assign it the tuple returned by the greeting function. All you have to do here is create a new variable using the var keyword and then call the greeting function to set it's value. For example:

var message = sayHello("Jo")

The final task asks you to print out a value from the tuple using the println() function. You can access named items within a tuple using the . syntax. For example:

// Create a tuple
var myTuple = (foo: "Hello", bar: "Bye")

// Print an item in the tuple.
println(myTuple.foo)

The final line here would print out Hello.

I hope this helps :)
Let me know if there's anything you're still unclear on.