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iOS Functions in Swift Adding Power to Functions Returning Complex Values

functions in swift 3

Challenge Task 1 of 1

In this challenge, we have the following geographical coordinates

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 coordinates that takes a single parameter of type String, with an external name for, a local name of location, and returns a tuple containing two Double values (Note: You do not have to name the return values). 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. If a string is passed in that doesn’t match the set above, return (0,0)

Bummer! Make sure your function is named coordinates

functions.swift

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)

}

} im stuck gain

functions.swift
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)
 }
} 

2 Answers

Jeff McDivitt
Jeff McDivitt
23,970 Points

You forgot the external name for

func coordinates(for 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)
    }
}

Just a couple of small things - you have named the function wrong (should be just "coordinates") and left out the external argument name (which should be "for"):

// Enter your code below
func coordinates(for 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)
  }
}