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iOS Functions in Swift Adding Power to Functions Returning Complex Values

Posted by Fredrik Carlsson
Fredrik Carlsson
4,248 Points

Why?

Whats wrong with my code? It works in swift but not here in treehouse

functions.swift 
// Enter your code below
func coordinates (for location: String) -> (a: Double, b: Double){
    var a = 0.0
    var b = 0.0

    switch location{
    case "Eiffel Tower": a = 48.8582; b = 2.2945 
    case "Great Pyramid": a =  29.9792; b = 31.1344
    case "Sydney Opera House": a = 33.8587; b = 151.2140
    default:  a = 0; b = 0
    }

return (a, b)
}

2 Answers

Steven Deutsch
Steven Deutsch
21,046 Points
Steven Deutsch
Steven Deutsch
21,046 Points

Hey Fredrik Carlsson,

The code compiles because it is valid Swift code. You just didn't solve the question the way Treehouse wanted you to. Instead of assigning the lon/lat values to variables a and b, just return the values directly.

// Enter your code below
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)
    }
}

You don't have to name the return values inside of the tuple, as stated in the challenge.

Good Luck

Fredrik Carlsson
Fredrik Carlsson
4,248 Points
Fredrik Carlsson
Fredrik Carlsson
4,248 Points

Thank you Steven!