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iOS Intermediate Swift 2 Properties Computed Properties

Cody Adkins
Cody Adkins
7,260 Points
Posted by Cody Adkins
Cody Adkins
7,260 Points

Pretty sure I should abandon ship on this problem...

Can someone help me understand the solution a little better?

enum.swift 
struct Style {
let UIFontTextStyleHeadline = "UIFontTextStyleHeadline"
let UIFontTextStyleBody = "UIFontTextStyleBody"
let UIFontTextStyleFootnote = "UIFontTextStyleFootnote"
}

enum Text {
  case Headline = UIFontTextStyleHeadline
  case Body = UIFontTextStyleBody
  case Footnote = UIFontTextStyleFootnote 
  var style: Style {
    get { 

    }
  }
}

1 Answer

Greg Kaleka
Greg Kaleka
39,021 Points
Greg Kaleka
Greg Kaleka
39,021 Points

Hey Cody,

You got a little bit crazy with creating a Style struct! This is a little bit simpler than it seems. The tricky part is that you have to write a switch statement within the enum that switches on self. In other words, when the property style is "gotten", it will check to see which Text it is, and then return the correct string based on that.

Let me know if the code below makes sense, or if you have other questions!

selfSwitching.swift 
let UIFontTextStyleHeadline = "UIFontTextStyleHeadline"
let UIFontTextStyleBody = "UIFontTextStyleBody"
let UIFontTextStyleFootnote = "UIFontTextStyleFootnote"

enum Text {
  case Headline
  case Body
  case Footnote
  var style: String {
    get {
      switch self {
        case Headline:
          return UIFontTextStyleHeadline
        case Body:
          return UIFontTextStyleBody
        case Footnote:
          return UIFontTextStyleFootnote
      }
    }
  }
}