Duck Typing

  class Duck {
    def quack = println("Quack - I'm a duck")
  }
  
  class Hunter {
    def quack = println("Kwak, I'm a bad ass hunter")
  }

  def makeSomeNoise(duck: { def quack }) = {
    duck.quack
  }
  
  
  val duck = new Duck
  val hunter = new Hunter
  
  println(makeSomeNoise(duck))
  println(makeSomeNoise(hunter))