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iOS Swift Enums and Structs Enums and their Methods Methods or Member Functions

anybody willing to explain/give code for me. Stuck on enums

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

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

1 Answer

Chris Shaw
Chris Shaw
26,650 Points

Hi ayman,

As per the previous video the challenge is asking that we remove the currentValue parameter and in place use the self keyword so we refer to the current enum rather than accepting it in the method itself.

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

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

So as you can see currentValue no longer exists as a parameter in our method and instead of currentValue.rawValue we now have self.rawValue which refers to the enum instance that called the method.