I am confused I did what the directions wanted and if I didnt someone please tell me what I missed.

Question

I am just confused.

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 {
  let state: LightState
  var color: Color

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

Answer 1 · 2017-03-21T04:34:09Z

March 21, 2017 4:34am

Hi Tyler,

The challenge asks for you to create a protocol called, ColorSwitchable, which you did. Then it asks that you add a function to the protocol called switchColor(color:), which you did. The only part that needed to be corrected, is for you to remove the curly braces after you add the function to the protocol. Inside the protocol, there is no need to define the function, the function will be defined in the type which inherits the protocol. Thus, this would be the answer for the top:

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

And for the second part of the task, the challenge asks you to have the WifiLamp adopt the ColorSwitchable protocol, and to set the color received in the function to the color property of the WifiLamp. This can be achieved like so:

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

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

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

Hope this helps!

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Tyler Dotson

Tyler Dotson

I am confused I did what the directions wanted and if I didnt someone please tell me what I missed.

1 Answer

Andrew Boryk

Andrew Boryk