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iOS

Posted by Mohammad Rehman
Mohammad Rehman
Courses Plus Student 2,416 Points

how do i do this task

https://teamtreehouse.com/library/functions-and-optionals/parameters-and-tuples/tuples-2

2 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi Mohammed,

The first stage requires you to modify what the existing function returns into a tuple, with appropriate names.

You start out with 

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

    return greeting
}

which is a function returning a String. To amend that, add the two Strings it now needs to return, while naming them. We also need to actually return the tuple! So, a couple of amendments in the method implementation and return statement. 

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

    return (greeting, language)
}

That should get you through the first bit of code; let me know if you need a hand with the rest of the challenge.

Steve.

Mohammad Rehman
Mohammad Rehman
Courses Plus Student 2,416 Points

can i get help with the second and the third part, I have been trying to do it for a long time?

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Sure!

The second part asks you to create a variable called result. So that's var result = something. THe value of result should be what the greeting function returns. That function takes a String as a parameter - the questions asks that it be passed the string Tom. The line of code that does that looks like: 

var result = greeting("Tom")

Next up, the challenge is to print out "the language element". The greeting function returns a tuple - that has more than one part to it. In this case, greeting and language. We only want to print out the language bit. You can use dot notation to access each element of the tuple:

println(result.language)

So, that's it! I hope you understand that - just shout it not.

Steve.