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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

It says that I have a compiler error but when I click preview nothing is shown.

When I click on the preview button, it shows me an html file with nothing written in it.

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 name): return UIBarButtonItem (title: name, style: .done, target: nil, action:nil)
      case .edit (let name): return UIBarButtonItem (title: name, style: .plain, target: nil, action: nil)
      }
    }
}
let done = BarButton.done (title: "Save")
let button = done.button

1 Answer

Thomas Dobson
Thomas Dobson
7,511 Points

Hi Julian,

I too have issues with the preview compiler showing. Can make it difficult to troubleshoot sometimes.

Your ganna kick yourself if the pants when you see this: you nailed it other than a syntax error on the last line of code! Good work!

// Example of UIBarButtonItem instance
// let someButton = UIBarButtonItem(title: "A Title", style: .plain, target: nil, action: nil)

// 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 name): return UIBarButtonItem (title: name, style: .done, target: nil, action:nil)
      case .edit (let name): return UIBarButtonItem (title: name, style: .plain, target: nil, action: nil)
      }
    }
}
let done = BarButton.done (title: "Save")
let button = done.button() // you forgot the "()" on the button() call! :(