I don't understand...

Question

Can someone please try to explain the question in greater detail? I am having trouble understanding exactly what he wants me to do...

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) {
      red = 86.0
      green = 191.0
      blue = 131.0
      alpha = 1.0


}
}

Answer 1 · 2016-02-17T22:45:30Z

February 17, 2016 10:45pm

Hi Ryan,

The challenge is asking you to create an initializer for RGBColor. Here's what the most initializer would look like if you wrote it out (note, you don't have to write this out for Structs - it's done behind the scenes for you):

youDontNeedToDoThis.swift

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

So this is done for free and we don't need to do it. But also, in this instance, we don't want to pass in a description - we want that to be generated on its own, based on the other properties. So we just have to change the description initialization, so it matches what the challenge is asking for:

solution.swift

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)"
}

Make sense? Let me know if you have other questions.

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Ryan Maneo

Ryan Maneo

I don't understand...

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Greg Kaleka

Greg Kaleka

Ryan Maneo

Ryan Maneo

Greg Kaleka

Greg Kaleka