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iOS Protocols in Swift Protocol Basics Protocols With Methods

Brian Patterson
Brian Patterson
19,588 Points
Posted by Brian Patterson
Brian Patterson
19,588 Points

I dont understand why this is wrong

Not sure why they say this is wrong.

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)
  }
}

1 Answer

Chris Stromberg
PLUS
Chris Stromberg
Courses Plus Student 13,389 Points
Chris Stromberg
Chris Stromberg
Courses Plus Student 13,389 Points

The challenge asks that you omit the external parameter name. You need to add an _ to do this.

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