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iOS Functions in Swift Adding Power to Functions Returning Complex Values

Michael Cafin
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.a{fill-rule:evenodd;}techdegree
Michael Cafin
iOS Development Techdegree Student 1,221 Points
Posted by Michael Cafin
.a{fill-rule:evenodd;}techdegree
Michael Cafin
iOS Development Techdegree Student 1,221 Points

Some pointers needed

Wondering if the following is correct:

  • Would utilizing a Switch be appropriated?
  • Is my return correct (I know it is "void" as of now)

Any other pointers are welcomde

functions.swift 
func coordinates(for location: String) -> (Double, Double) {

    switch location {
        case "Eifel Tower": (48.8582, 2.2945)
        case "Great Pyramid": (29.9792, 31.1344)
        case "Sydney Opera House": (33.8587, 151.2140)
    default: (0, 0)
    }
    return ()

}

3 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi Michael,

A switch statement is perfect for this solution, yes! You will need to return the tuple in each case individually. You also need to spell Eiffel correctly, else it'll not work. :smile: :wink: 

func coordinates(for location: String) -> (Double, Double) {

    switch location {
        case "Eiffel Tower": return (48.8582, 2.2945)
        case "Great Pyramid": return (29.9792, 31.1344)
        case "Sydney Opera House": return (33.8587, 151.2140)
        default: return (0, 0)
    }
}

I hope that helps,

Steve.

Michael Cafin
seal-mask
.a{fill-rule:evenodd;}techdegree
Michael Cafin
iOS Development Techdegree Student 1,221 Points
Michael Cafin
.a{fill-rule:evenodd;}techdegree
Michael Cafin
iOS Development Techdegree Student 1,221 Points

Wow! Have not seen a switch statement like that before where the return is included in each case. But it makes sense.

Thanks for the Eiffel typo (duh!) I confuse it often with the "Eifel Mountain Range" in west Germany :) that is spelled with one "f"

Steve Hunter
Steve Hunter
57,712 Points

There may be a more elegant way of doing that; I'm no expert. You could set a local variable within the method, assign the tuple to it within each case statement and return that after the switch, perhaps.

I've walked in the Eifel range; very nice part of the world, not that the surroundings of the Eiffel Tower are shabby - also a lovely place! :+1:

Steve.