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shane reichefeld
Courses Plus Student 2,232 PointsWhat do i do?
Enum Help?
import Foundation
enum UIBarButtonStyle {
case Done
case Plain
case Bordered
}
class UIBarButtonItem {
var title: String?
let style: UIBarButtonStyle
var target: AnyObject?
var action: Selector
init(title: String?, style: UIBarButtonStyle, target: AnyObject?, action: Selector) {
self.title = title
self.style = style
self.target = target
self.action = action
}
}
let done = UIBarButtonStyle.Done
enum Button {
case Done(String)
case Edit(String)
}
2 Answers
jcorum
71,830 PointsThe challenge asks for a function. As the videos have pointed out, functions start with the keyword func. Then you give the function a name, paretheses (with parameters, if there are any), and a return type (if it's other than Void). Inside the function you need a switch statement that switches on the various cases of the enum. You use self to self to refer to the enum, and you write a case statement for each of the enum's cases. In the cases' return statements you need to use the associated values as the button titles. Something along these lines. They asked for only two of the cases, but I've put the third one in just for completeness. The editor doesn't mind.
enum Button {
case Done(String)
case Edit(String)
case Bordered(String)
func toUIBarButtonItem() -> UIBarButtonItem {
switch self {
case .Done(let doneValue):
return UIBarButtonItem(title: doneValue, style: UIBarButtonStyle.Done, target: nil, action: nil)
case .Edit(let editValue):
return UIBarButtonItem(title: editValue, style: UIBarButtonStyle.Plain, target: nil, action: nil)
case .Bordered(let borderValue): //not in challenge
return UIBarButtonItem(title: borderValue, style: UIBarButtonStyle.Plain, target: nil, action: nil)
}
}
}
let done = Button.Done("Done")
let doneButton = done.toUIBarButtonItem()
jcorum
71,830 Pointsshane, I'm puzzled? I'm not sure what you mean by "get it correct"? If you mean that you cannot pass the challenge, all you need to do is copy my enum and paste it over the enum that is in the enums.swift file.
Or if you don't see enums.swift, note that the challenge opens with buttons.swift showing. You need to click the tab that says enums.swift to open it first.
Or?
shane reichefeld
Courses Plus Student 2,232 Pointsshane reichefeld
Courses Plus Student 2,232 PointsIm still confused on how they want the answer i cant seem to get it correct