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iOS Protocols in Swift Protocol Basics Protocols With Methods

Posted by brandenyang
brandenyang
4,998 Points

Protocols with Methods Code Challenge

What does it mean by "simply set the color of the lamp to the new color"? I am on task 2.

This would be a lot easier if there was the Preview button :(

protocols.swift 
// Declare protocol here
protocol ColorSwitchable {
  func switchColor(_ color: Color)
}

enum LightState {
  case on, off
}

enum Color {
  case rgb(Double, Double, Double, Double)
  case hsb(Double, Double, Double, Double)
}

class WifiLamp: ColorSwitchable {
  let state: LightState
  var color: Color

  init() {
    self.state = .on
    self.color = .rgb(0,0,0,0)
  }
}

func switchColor(_ color: Color) {

}

EDIT: I fixed it. The problem was that I had the method outside of the WifiLamp class. It should've looked like this:

protocols.swift 
// Declare protocol here
protocol ColorSwitchable {
  func switchColor(_ color: Color)
}

enum LightState {
  case on, off
}

enum Color {
  case rgb(Double, Double, Double, Double)
  case hsb(Double, Double, Double, Double)
}

class WifiLamp: ColorSwitchable {
  let state: LightState
  var color: Color

 func switchColor(_ color: Color) {
  self.color = color
}

  init() {
    self.state = .on
    self.color = .rgb(0,0,0,0)
  }
}

(I also needed to add self.color = color)

Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points
Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points

func switchColor(_ color: Color) { self.color = color }