Raw type 'Bool' is not expressible by any literal

Question

I want to have my enums easily compatible with @IBInspectable, so for the sake of simplicity, I tried to have it representable with type Bool:

enum TopBarStyle: Bool {
    case darkOnLight
    case lightOnDark
}

But Xcode is giving me:

Raw type 'Bool' is not expressible by any literal

That's strange, as true and false seem to be perfect candidates for expressibility by literals.

I've also tried to add RawRepresentable conformance to type Bool with:

extension Bool: RawRepresentable {
    public init?(rawValue: Bool) {
        self = rawValue
    }
    public var rawValue: Bool {
        get { return self }
    }
}

But it didn't solve the error.

Answer 1

Simplify your life:

enum TopBarStyle {
    case darkOnLight
    case lightOnDark

    var bool: Bool {
        switch self {
        case .darkOnLight:
            return true
        default:
            return false
        }
    }
}

Use as usual:

    var current = TopBarStyle.darkOnLight

    if current.bool {
        // do this
    } else {
        // do that
    }

You can extend cases to more but they are not reversible since its an N : 2 matrix