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iOS Swift 2.0 Functions Function Parameters Returning Complex Values

guillem Bruix
guillem Bruix
2,614 Points
Posted by guillem Bruix
guillem Bruix
2,614 Points

I Can't complete ch. task 1 of 1 (Swift 2.0 Functions - Returning Complex Values 2) Please help

I'm doing something wrong in this challenge task:

https://teamtreehouse.com/library/swift-20-functions/function-parameters/returning-complex-values-2

My code seems to works well in my Playground, but not in the Treehouse's checker :( I can't find where is the mistake. Any help? Thanks!

functions.swift 
// Enter your code below
func getTowerCoordinates(location:String) -> (lat:Double, lon:Double){

    var lat:Double
    var lon:Double

    switch location {
    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: (lat=0, lon=0)
    }
    return (lat, lon)
}
getTowerCoordinates("Eiffel Tower")

4 Answers

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello:

Your code is good, but the challenge does not specify to name the elements in the tuple, and also says to return (0,0).

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

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

Hope this helps.

Raphael Reiter
Raphael Reiter
6,820 Points
Raphael Reiter
Raphael Reiter
6,820 Points

Hey Jhoan: I don't understand your default and return, you write (0,0). Aren't those integers? i wrote (0.0,0.0) and (0.0,0.0) to have two doubles, but it didnt work. when I wrote your code, I passed. Can you please explain why? thanks :)

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hey Raphael:

You can put an whole number ( integer ) in a type double if you like. It's accepted, but you cannot do it the other way. 

var double: Double = 53 // This is accepted.
var integer: Int = 0.0 // This gives an error.

Hope that answers your question.