Swift Enumeration order and comparison

Question

I\'ve had trouble finding/understanding documentation on how to compare enums in Swift by their order of definition. Specifically when I create an enumeration such as

Answer 1

In newer versions of Swift you can create a protocol to achieve this, without the need for generic globals. This also gives you the ability to choose which enums this affects.

/// Allows a raw enum type to be compared by the underlying comparable RawValue
public protocol RawComparable : Comparable where Self : RawRepresentable, RawValue: Comparable {
}

extension RawComparable {
    public static func < (lhs: Self, rhs: Self) -> Bool {
        return lhs.rawValue < rhs.rawValue
    }
}

To use this it's as simple as adding the RawComparable protocol to the enum type:

enum EnumType : Int, RawComparable {
    case First = 0, Second, Third
}