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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Cory Moore
Cory Moore
2,963 Points

Either the program is broken or I am not understanding the task

What am I doing wrong here.

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 :
          return UIBarButtonItem(title: "Save", style: UIBarButtonItemStyle.done, target: nil, action: nil)
         case .edit :
          return UIBarButtonItem(title: "Edit", style: UIBarButtonItemStyle.plain, target: nil, action: nil)
      }
    }

}

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

let doneButton = done.button()

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points

Hello Cory,

This challenge is looking to use the associated values of the enum.

Click here for a short explanation on how to use and extract associated values.

Challenge:

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 button = done.button()

Do read the link above. It was an answer I gave to someone else a few days ago and it may help you as well.

Good luck and let me know if you need more help.