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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Posted by Peter Tram
Peter Tram
Courses Plus Student 6,898 Points

Why doesn't this pass?

Can anyone pls tell me why this doesn't pass?

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 .done(let title) : return UIBarButtonItem(title: title, style: .done, target: nil, action: nil)
        case .edit(let title) : return UIBarButtonItem(title: title, style: .plain, target: nil, action: nil)
        }
    } 
}


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

4 Answers

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Re-read the question it asks : This member takes an associated value; assign it the string "Save". You have "Done" in there

The correct is below

let done = BarButton.done(title : "Save")
Peter Tram
PLUS
Peter Tram
Courses Plus Student 6,898 Points
Peter Tram
Peter Tram
Courses Plus Student 6,898 Points

Hi Jeff, thanks for the reply. Tried "Save". Still not working. " Bummer! Make sure you assign the results of the expression to a constant named doneButton"

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Ahh I see your error, your just need let button not doneButton

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

    func button() -> UIBarButtonItem {
      switch self {
        case .done(let title) : return UIBarButtonItem(title: title, style: .done, 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 button = done.button()
Peter Tram
PLUS
Peter Tram
Courses Plus Student 6,898 Points
Peter Tram
Peter Tram
Courses Plus Student 6,898 Points

Great, thanks