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! While you're at it, check out some resources Treehouse students have shared here.

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

Graeme Robertson
Graeme Robertson
3,002 Points
Posted by Graeme Robertson
Graeme Robertson
3,002 Points

Im confused where I'm going wrong

i can't seem to grasp where i have gone wrong.

functions.swift 
func coordinates(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)
    }

}
luke jones
luke jones
8,915 Points
luke jones
luke jones
8,915 Points

Hi Graeme,

in the challenge is states to Declare a function named coordinates that takes a single parameter of type String, with an external name for, a local name of location

You're missing the external name, it should be :

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

2 Answers

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

func coordinates(for location: String) -> (lat: Double, lon: 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, 151.2141)
default:
    print("Location not found")
    return(0,0)
}

}

Graeme Robertson
Graeme Robertson
3,002 Points
Graeme Robertson
Graeme Robertson
3,002 Points

thanks guys! so simple when i read back