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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Gabriel Spranger Rojas
Gabriel Spranger Rojas
7,350 Points
Posted by Gabriel Spranger Rojas
Gabriel Spranger Rojas
7,350 Points

Please HELP

I don't know what's wrong nor what's missing. I'm really confused, so can please someone clarify what I need to add or fix and why?

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: "Save")
let doneButton = done.button()

2 Answers

Simon Di Giovanni
Simon Di Giovanni
8,429 Points
Simon Di Giovanni
Simon Di Giovanni
8,429 Points

Hi Gabriel

I found nothing wrong with your code...

I found the solution however, it is only very slightly different to yours

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

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

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

The only thing that I changed, is that I created a variable for the switch statement to use, and the function returns the variable, rather than the switch statement returning directly.

I think this might be a problem with their code challenge, as the result is exactly the same. I encourage you to report this to them for the teaching staff to take a further look at this.

Gabriel Spranger Rojas
Gabriel Spranger Rojas
7,350 Points
Gabriel Spranger Rojas
Gabriel Spranger Rojas
7,350 Points

That was the problem. Thank you so much, Simon.