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iOS Swift 2.0 Functions Function Parameters Returning Complex Values

Functions with switch

Wonder why this isn't working? Playground says there is a missing closed curly bracket "}", but there isn't. Also, when I add "Int" next to String, it says there is supposed to be a separator "_:"??? I didn't learn anything about this separator in previous video?

Challenge Task 1 of 1

For this challenge, let's say we're building a component of an app that allows a user to type in a location of a famous landmark and get back the geographical coordinates.

To keep the scope limited, let's say we're only working with the following values.

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 getTowerCoordinates that takes a single parameter of type String, named location, and returns a tuple containing two Double values (Note: You do not have to name the return values)

Use a switch statement to switch on the string passed in to return the right set of coordinate values for the location.

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.

For the default case in the switch statement, return (0,0).

/Users/mattconway/Desktop/Screen Shot 2016-01-18 at 7.46.11 PM.png

functions.swift
// Enter your code below
func getTowerCoordinates(location: String) -> (Double, Double) {
switch location {
case "Eiffel Tower": (48.8582, 2.2945)
case "Great Pyramid": (29.9792, 31.1344)
case "Sydney Opera House": (33.8587, 151.2140)
default: (0,0)
}
}

answer is kinda sorta in your question . 'should return' . Make sure you are explicitly telling the 'case' to return something...

2 Answers

Jari Koopman
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.a{fill-rule:evenodd;}techdegree seal-36
Jari Koopman
Python Web Development Techdegree Graduate 29,349 Points

Hi Matt,

The thing you are missing is a single word, instead of returning location between the brackets you should return all of the single locations (the lat and the long) like this:

func getTowerCoordinates(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)
}
}

I tried this workout in the challenge and it worked absolutely fine. Hope this helped!

Actually, I snapped wrong screenshot. I already had added "return location" between two closing curly brackets. Still an error. Here is the actual screenshot: /Users/mattconway/Desktop/Screen Shot 2016-01-18 at 8.17.49 PM.png

don't see the screen shot