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iOS Swift 2.0 Protocols Swift 2.0 Protocols Protocols With Methods

There error says that I need to have a method as specified

Here is the code.

// Declare protocol here

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)

protocol ColorSwitchable {
  func switchColor(color : Color) 

1 Answer

Nathan Tallack
Nathan Tallack
22,159 Points

You need to remove the space between your parameter name color and the : you are using. It uses that to know that you are declaring a Type for that parameter.

Also, as you will find in the next task for your challenge, the compiler reads source top down. So you should move your protocol to the top of your source so that when you try to use it in your type declaration later it will already know what the protocol is. :)