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iOS Swift 2.0 Functions Function Parameters Returning Complex Values

Can't work it out!

Hey guys,

I'm a little confused with this task.

Can you please tell me what I'm doing wrong?

// Enter your code below

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

  switch towerCoordinates{
  case "Eiffel Tower": lat 48.8582, lon 2.2945
  case "Great Pyramid" : lat 29.9793, lon 31.1344
  case "Sydney Opera House" : lat 33.8587, lon 151.2140
  default:  (0,0) }


1 Answer

Michael Reining
Michael Reining
10,101 Points

Hi Matt,

You are close but confusing a few items.

  1. You need to switch on the input parameter name (location)

  2. For each case you just need to return a tuple with two Double values

If you test everything in the playground in Xcode you will get much better feedback and accelerate your learning. It really helps. Give it a try.

Once you do the above, the code should look like this.

// Enter your code below

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

    switch location { // switch on parameter called location
    case "Eiffel Tower": return (48.8582,2.2945) // return tuple with two doubles
    case "Great Pyramid" : return (29.9792,31.1344)
    case "Sydney Opera House" : return (33.8587,151.2140)
    default:  return (0,0) }


getTowerCoordinates("Eiffel Tower") // for playground only to see results

I hope that helps,


PS: If you found the above helpful, be sure to check out my app which breaks code challenges down and really explains things so you can learn faster.

Code! Learn how to program with Swift


PPS: I could not have developed the above app without going through the awesome resources on Team Treehouse. Stick with it. It is so worth it!