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iOS Protocols in Swift Protocol Basics Protocols With Methods

Ryan Clark
Ryan Clark
2,832 Points
Posted by Ryan Clark
Ryan Clark
2,832 Points

How dos this work in Xcode but not here?

Is it something silly Im missing?

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

David Papandrew
David Papandrew
8,386 Points
David Papandrew
David Papandrew
8,386 Points

In your ColorSwitchable protocol, you need a single space between the function's external name (underscore) and the internal name (color).

func switchColor(_ color: Color)