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iOS Object-Oriented Swift 2.0 Complex Data Structures Custom Initializers

Posted by nguoisechiavn8
.a{fill-rule:evenodd;}techdegree
nguoisechiavn8
iOS Development Techdegree Student 5,547 Points

adfsda

afsdf

structs.swift 
struct RGBColor {
    let red: Double
    let green: Double
    let blue: Double
    let alpha: Double

    let description: String

    // Add your code below

    init(red: Double, green: Double, blue: Double, alpha: Double, description: String) {
      self.red = 100.0
      self.green = 50.0
      self.blue = 139.0
      self.alpha = 5.0
      self.description = "red: 100.0, green: 50.0, blue: 139.0, alpha: 5.0"
    }

}

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Adfsda indeed! :smile: I was both sympathetic to your frustration and amused by its expression.

The structure of your constructor looks good, but I noticed these two issues:

  • you are setting your property values using the literal values from the example instead of the passed arguments
  • your description value is also a literal string instead of constructing it using the arguments

If you build your object using the passed arguments instead of the literal values you should be good. But if you're still stuck, here's how I did it:

:warning: SPOILER ALERT

    init(red: Double, green: Double, blue: Double, alpha: Double) {
      self.red = red
      self.green = green
      self.blue = blue
      self.alpha = alpha
      self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
    }