How to make an enum conform to a protocol in Swift?

Question

Swift documentation says that classes, structs, and enums can all conform to protocols, and I can get to a point where they all conform. But I can

Answer 1

Here's another approach, using only the knowledge gained from the tour until that point*

enum SimpleEnumeration: String, ExampleProtocol {
    case Basic = "A simple enumeration", Adjusted = "A simple enumeration (adjusted)"

    var simpleDescription: String {
        get {
            return self.toRaw()
        }
    }

    mutating func adjust() {
        self = .Adjusted
    }
}

var c = SimpleEnumeration.Basic
c.adjust()
let cDescription = c.simpleDescription

If you want to have adjust() act as a toggle (although there's nothing to suggest this is the case), use:

mutating func adjust() {
    switch self {
    case .Basic:
        self = .Adjusted
    default:
        self = .Basic
    }
}

*(Although it doesn't explicitly mention how to specify a return type and a protocol)