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iOS Swift 2.0 Protocols Swift 2.0 Protocols Protocols With Methods

Not getting it.

I don't have an option to check for the errors so I'm not sure what I'm missing.

// 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)

1 Answer

Nathan Tallack
Nathan Tallack
22,159 Points

In the protocol you are declaring the function not defining it. So you don't need to include the code block for it.

Change it so your protcol does not include the function code block. It will look like this.

protocol ColorSwitchable {
    func switchColor(color: Color)

Oh man, it all makes sense now! thanks for the tip!