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iOS Functions in Swift Adding Power to Functions Returning Complex Values

Neymat Kakar
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Neymat Kakar
iOS Development Techdegree Student 786 Points
Posted by Neymat Kakar
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Neymat Kakar
iOS Development Techdegree Student 786 Points

Functions in Swift 3

In this challenge, we have the following geographical coordinates

Eiffel Tower - lat: 48.8582, lon: 2.2945 Great Pyramid - lat: 29.9792, lon: 31.1344 Sydney Opera House - lat: 33.8587, lon: 151.2140

Declare a function named coordinates that takes a single parameter of type String, with an external name for, a local name of location, and returns a tuple containing two Double values (Note: You do not have to name the return values). For example, if I use your function and pass in the string "Eiffel Tower" as an argument, I should get (48.8582, 2.2945) as the value. If a string is passed in that doesn’t match the set above, return (0,0)

1 Answer

Nichlas Kondrup
Nichlas Kondrup
17,748 Points
Nichlas Kondrup
Nichlas Kondrup
17,748 Points

You can use a switch statement on the location parameter which returns a tuple of doubles.

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)
    }
}
Zackary O'Connor
Zackary O'Connor
1,526 Points

Why do you have to add the 'return' before every value?