In Swift, is it possible to convert a string to an enum?

Question

If I have an enum with the cases a,b,c,d is it possible for me to cast the string \"a\" as the enum?

Answer 1

Extending Duncan C's answer

extension StringEnum: StringLiteralConvertible {

    init(stringLiteral value: String){
        self.init(rawValue: value)!
    }

    init(extendedGraphemeClusterLiteral value: String) {
        self.init(stringLiteral: value)
    }

    init(unicodeScalarLiteral value: String) {
        self.init(stringLiteral: value)
    }
}