Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Intermediate Swift 2 Properties Computed Properties

Connor Crawford
Connor Crawford
6,405 Points
Posted by Connor Crawford
Connor Crawford
6,405 Points

Cannot figure out how to represent the data within the computed property style. Do I need a get {} and set{}?

Have tried several things and Xcode just keeps popping me errors. What type is associated with the style property, a String or type Text?

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

enum Text {
  case Headline
  case Body
  case Footnote
}
Tee Abdul
Tee Abdul
8,411 Points

You can use a switch statement to compute the style based on the case:

let UIFontTextStyleHeadline = "UIFontTextStyleHeadline"
let UIFontTextStyleBody = "UIFontTextStyleBody"
let UIFontTextStyleFootnote = "UIFontTextStyleFootnote"

enum Text {
    case Headline
    case Body
    case Footnote

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

let textStyleHeadline = Text.Headline.style                // -> "UIFontTextStyleHeadline"
let textStyleBody = Text.Body.style                            // -> "UIFontTextStyleBody"
let textStyleFootnote = Text.Footnote.style              // -> "UIFontTextStyleFootnote"

I haven't looked at the task, so this might not be the right answer for it