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iOS Object-Oriented Swift 2.0 Complex Data Structures Custom Initializers

Bruce Röttgers
Bruce Röttgers
18,211 Points
Posted by Bruce Röttgers
Bruce Röttgers
18,211 Points

What should I do in this task, I don't really understand.

Can you help me?

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, green, blue, alpha) {
      red = 86
      green = 191
      blue = 131
      alpha = 1
    }
}

2 Answers

Paul Melvin
Paul Melvin
Courses Plus Student 4,364 Points

hi Bruce,

What they are asking for is a custom initialiser and to include all constants, i.e. including description

My understanding is that you cannot change a constant unless initialising but you also need to use the self keyword to ensure it references the correct one...

init(red: Double, green: Double, blue: Double, alpha: Double) {
    self.red = 86.0
    self.green = 191.0
    self.blue = 131.0
    self.alpha = 1.0
    self.description = "red: \(red), green: \(green), blue: \(blue), alpha: \(alpha)"
    }

HTH

Paul

Bruce Röttgers
Bruce Röttgers
18,211 Points
Bruce Röttgers
Bruce Röttgers
18,211 Points

Big thank you! What does THT mean?

Bruce.

Paul Melvin
PLUS
Paul Melvin
Courses Plus Student 4,364 Points
Paul Melvin
Paul Melvin
Courses Plus Student 4,364 Points

HTH = Hope That Helps

I am lazy :)