Stackable traits example

stackable.scala

class Base {
  def work() {
    // do some work
  }
}
 
trait Logging extends Base {
  override def work() {
    log("Doing work")
    super.work()
    log("Work done")
  }
}
 
trait EventPublishing extends Base {
  override def work() {
    super.work()
    publishEvent(new WorkDoneEvent)
  }
}
 
class Concrete extends Base with EventPublishing with Logging
// Concrete.work() = Logging.work() where super.work() is EventPublishing.work() where super.work is Base.work()