Bare bones to implement the Cake Pattern down the road.

DietCakePatternRequiredLines.scala

/***** Dependency *****/
trait EngineComponent {
  val engine: Engine
  // class Engine {
  //   def start: Unit = println("engine.start: vroom")
  // }
}


/***** Dependent implementation *****/
trait CarComponent {
  //this: EngineComponent => //Need to declare your dependency anyways
  
  // class Car {
  //   def turnKey: Unit = {
  //     println("Attempting to start the car...")
  //     engine.start
  //   }
  // }
}

/***** Containers *****/
object Container extends CarComponent with EngineComponent {
  val engine = new Engine
  val car = new Car
}

/***** Example usage *****/
val car = Container.car
car.turnKey