Simple Typed Actor

TypedActor.scala

import akka.actor.Actor

/**
  * Simple [[TypedActor]] that gives any class implementing it the power to have typed messages making
  * proper use of the compiler for type check exhaustiveness by just using a typed [[Function1]].
  *
  * For convenience use this trait instead of using directly [[Actor]] unless you have a good reason.
  * */
trait TypedActor[A] extends Actor {
  type TypedReceive = A => Unit
  def typedReceive: TypedReceive

  private def liftToPF[X <: Y, W, Y](f: Function[X, W])(implicit ct: ClassTag[X]): PartialFunction[Y, W] =
    new PartialFunction[Y, W] {
      override def isDefinedAt(x: Y): Boolean = ct.runtimeClass.isInstance(x)
      override def apply(v1: Y): W = f(v1.asInstanceOf[X])
    } 
 
  override def receive: Receive = liftToPF(typedReceive)
}