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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Abraham Zamudio
Abraham Zamudio
1,896 Points
Posted by Abraham Zamudio
Abraham Zamudio
1,896 Points

I'm still having a hard time understanding how to use tuples.

I am stuck on this last challenge and I am not sure how to get past this task.

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

    return greeting
}

2 Answers

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello Abraham:

challenge says:

Currently our greeting function only returns a single value. Modify it to return both the greeting and the language as a tuple. Make sure to name each item in the tuple: greeting and language. We will print them out in the next task.

let’s break it down

First part says: Modify it to return both the greeting and the language as a tuple. 

/* 
   Here the function says it will return just ONE value of type String
   and we need for it to say that it will return TWO values of type String. 
*/
func greeting(person: String) -> String { 
    let language = "English"
    let greeting = "Hello \(person)”
/*
   We also need to modify our return statement to return the two values,
   meaning, a tuple.
*/
    return greeting 
}

Here are the modifications:

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

    return greeting
}

Then it says: Make sure to name each item in the tuple: greeting and language.

                                    // We give them names
func greeting(person: String) -> (greeting: String, language: String) {
    let language = "English"
    let greeting = "Hello \(person)"

  // And modify it so that it returns both values of the tuple. 
    return (greeting, language)
}

Hope that clears it out for you a bit.

Peter Drew
Peter Drew
91 Points
Peter Drew
Peter Drew
91 Points

Hey Abraham! Try this out. 

//change the return type to a tuple
func greeting(person: String) -> (greeting: String, language: String) {
    let language = "English"
    let greeting = "Hello \(person)"

    //return the tuple
    return (greeting, language)
}