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iOS Functions in Swift Adding Power to Functions Returning Complex Values

Aman Desai
Aman Desai
810 Points
Posted by Aman Desai
Aman Desai
810 Points

Why am I getting the error "error: use of unresolved identifier 'latLong' return latLong" in my code?

What should I do to correct this?

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

    let landmarks:[String:(Double, Double)]=["Eiffel Tower":(48.8582, 2.2945), "Great Pyramid":(29.9792, 31.1344), "Sydney Opera House":(33.8587, 151.2140) ]

    switch location {
    case "Eiffel Tower": var latLong = landmarks[location]
    case "Great Pyramid": var latLong = landmarks[location]
    case "Eiffel Tower": var latLong = landmarks[location]
    default: var latLong = (0.0,0.0)
    }

    return latLong
}

1 Answer

tromben98
tromben98
13,273 Points
tromben98
tromben98
13,273 Points

Hi, every time you have finished a challenge make sure you look through you code to avoid simple misstakes. For example you have written Eiffel Tower twice. Anyway you don't need to create the landmarks array you can just return the coordinates directly.

Here is the solution:

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 (0.0,0.0)
    }
}
Aman Desai
Aman Desai
810 Points
Aman Desai
Aman Desai
810 Points

Thank you so much!