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iOS Swift Enums and Structs Enums and their Methods Initializer

Posted by mohitbhatia
mohitbhatia
Courses Plus Student 5,153 Points

Code that works in xCode is not working in the treehouse editor

Hi I wrote the following code to complete the challenge but the web editor does not seem to accept it as the correct answer and I do not quite seem to be able to figure out the issue with the code since it works perfectly fine in a xCode playground (a default instance provides the correct raw value)

Any help would be appreciated.

enum.swift 
enum Coin: Int {
    case Penny = 1, Nickel = 5, Dime = 10, Quarter = 25 

    init() {
    self = Quarter
    }

    func isGreater(currentValue: Coin, newValue: Coin) -> Bool {
        return currentValue.rawValue > newValue.rawValue
    }
}

1 Answer

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi mohitbhatia,

The only issue I see with your code is you don't have a dot before Quarter which is required otherwise the swift compiler will assume it's a variable.

mohitbhatia
mohitbhatia
Courses Plus Student 5,153 Points

Thanks a lot for the answer. It got the code working just fine for the challenge. The only remaining question I have is that the code above functions in an xCode playground just fine without the additional dot. I verified this by creating a new variable using the enum it checking the raw value of the default case and I got 25 so I am not entirely sure as to what is going on here?

```Swift <p> enum Coin: Int { case Penny = 1, Nickel = 5, Dime = 10, Quarter = 25

init() {
    self = Quarter
}
func isGreater(currentValue: Coin, newValue: Coin) -> Bool {
    return currentValue.rawValue > newValue.rawValue
}

}

let coin = Coin() coin.rawValue

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

I believe this is due to a recent change in Xcode 6.1, because the constructor lives within a specified context i.e. Coin it infers the base type rather than assuming it's a variable.

mohitbhatia
mohitbhatia
Courses Plus Student 5,153 Points

Your explanation does makes perfect sense. Thanks a lot Chris I appreciate the help.