Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Functions in Swift Adding Power to Functions Returning Complex Values

Nigel Matheson
Nigel Matheson
Courses Plus Student 1,166 Points

functions swift

This code won't work for me and I really don't know why?

// Enter your code below
let coordinates = getTowerCoordinates("Eiffel Tower")

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

    var lat: Double = 0.0, lon: Double = 0.0

    switch namedlocation {
    case "Eiffel Tower": lat = 48.8582; lon = 2.2945
    case "Great Pyramid": lat = 29.9792; lon = 31.1344
    case "Sydney Opera House": lat = 33.8587;  lon = 151.2140
    default: return (0,0)

return (lat, lon)

2 Answers

Alex Koumparos
Alex Koumparos
Python Development Techdegree Student 36,886 Points

Hi Nigel,

Your first issue is that you are declaring a constant called coordinates that makes a function call to a non-existent function.

Your next issue is that you are missing the external argument label. As the challenge instructs:

Declare a function named coordinates that takes a single parameter of type String, with an external name for, a local name of location

Lastly, you make reference inside your function to namedLocation but you have no such property. The closest you have is location.