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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Matthew Ingram
PLUS
Matthew Ingram
Courses Plus Student 4,718 Points

why isn't this switch case exhaustive

help please

buttons.swift
// Example of UIBarButtonItem instance
// let someButton = UIBarButtonItem(title: "A Title", style: .plain, target: nil, action: nil)
enum BarButton {
    case done(title: String)
    case edit(title: String)

    func button() -> UIBarButtonItem{
        switch self {

        case BarButton.done(title: ""):
            return UIBarButtonItem(title: "A Title", style: .done, target: nil, action: nil)

        case BarButton.edit(title: ""):
            return UIBarButtonItem(title: "A Title", style: .plain, target: nil, action: nil)
        }

    }
}

let done = BarButton.done(title: "Save")

let button = BarButton.done(title: "")

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points

Is that the error you are getting? The switch statement you have is exhaustive

enum BarButton {
    case done(title: String)
    case edit(title: String)

    func button() -> UIBarButtonItem{
        switch self {
        case .done(let title):
            return UIBarButtonItem(title: title, style: .plain, target: nil, action: nil)
        case .edit(let title):
            return UIBarButtonItem(title: title, style: .plain, target: nil, action: nil)
    }
}

}
let done = BarButton.done(title: "Save")
let doneButton = done.button()
Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points

yes, the error i had said that my switch statement wasn't exhaustive