Swift: Enum case is not a member of type 'String' force to use raw value

Question

I have string enum:

enum Country:String {
    case France
    case Germany
    case UnitedStates
}

But depending on the uibutton restorationIdentifier I want to do something.

I have this ibaction:

@IBAction func countrySelection(_ sender: UIButton) {
    guard let selection:String = sender.restorationIdentifier else { return}
    switch selection {
    case Country.France:

    default:
        return
    }
}

But I'm getting this error on this line:

Enum case 'France' is not a member of type 'String'

line of code:

case Country.France:

I can fix the error changing that line to:

case Country.France.rawValue

But my question is, why do I need to or force to use the raw value?

I'll really appreciate your help.

Answer 1

You're trying to compare a String to a Country value. They're not the same type. As you noted, you could change your switch cases to String : Country.France.rawValue .

Or you can convert the String into a Country value:

@IBAction func countrySelection(_ sender: UIButton) {
    guard let selection = sender.restorationIdentifier else { return }
    guard let country = Country(rawValue: selection)

    switch country {
    case .France:
        // handle France
    default:
        return
    }
}

Note: That isn't really what the restorationIdentifier is for.