Recover Swift enum given its name (in case you can not have String as RawValue)

EnumNamed.swift

//: Playground - noun: a place where people can play

extension RawRepresentable where RawValue: BinaryInteger {
    
    init?(named name: String, from lower: Self, to upper: Self) {
        var i = lower.rawValue
        repeat {
            let x = Self(rawValue: i)!
            guard "\(x)" != name else {
                self = x
                return
            }
            i += 1
        } while i <= upper.rawValue
        return nil
    }
}

enum A : Int {
    case foo
    case bar
    case baz
}

let names = ["foo", "bar", "baz", "qux"]
names.map {
    A(named: $0, from: .foo, to: .baz)
}