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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Sara Grim
Sara Grim
5,285 Points
Posted by Sara Grim
Sara Grim
5,285 Points

On the tuples Swift Challenge, what does it mean to assign the return value of the "greeting" function to the "result"?

So far I have this in code

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

9 Answers

David Tonge
David Tonge
Courses Plus Student 45,640 Points 
var result = greeting("Tom")

you're assigning the value of the function "greeting()" to the variable with the name "result"

Richard Nash
Richard Nash
24,862 Points
Richard Nash
Richard Nash
24,862 Points

Thank you David Tonge, totally didn't get that one as well. I think tuples are a little hazy in my mind still.

David Tonge
David Tonge
Courses Plus Student 45,640 Points

No worries. I honestly think it's the way the question was worded, because I also had problems with that challenge.

Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points

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

return (language, greeting)

}

var result = greeting("Tom") ''' Why do I get an error on this than? "Your result variable has the wrong variable in it. Check instructions..."

Thanks for helping me out. :)

David Tonge
David Tonge
Courses Plus Student 45,640 Points

Your syntax is off. 

"Hello \(person)"

Missing the forward slash.

Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points

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

return (language, greeting)

}

var result = greeting("Tom")

I actually have the fwd slash. It disappeared with the ''' swift formation which went wrong somehow.

I still get the error.

Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points

There dissapeared the \ again. I'll see if I can correct this.

Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points 
func greeting(person: String) -> (language:String, greeting:String) {
    let language = "English"
    let greeting = "Hello \(person)"

    return (language, greeting)
}

var result = greeting("Tom")
Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points

Could it be that I switched the tuple values and names? I write language, greeting not greeting, language. Also the return value names (language: String, greeting: String)

Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points 
func greeting(person: String) -> (greeting:String,language:String) {
    let language = "English"
    let greeting = "Hello \(person)"

    return (greeting,language)
}

var result = greeting("Tom")
Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points

That way around works with the order greeting language.

Gabriel Kroll
Gabriel Kroll
9,823 Points
Gabriel Kroll
Gabriel Kroll
9,823 Points

But why?

David Tonge
David Tonge
Courses Plus Student 45,640 Points

I'll give you a clue. Look at the order you declared called the constants then look at the Tuples. I'm very new to the iOS but I'm pretty sure the order has something to do with it