Question

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How to overload bang(!) operator in Scala Actor model?

In an Actor model implementation in Scala, can we override the bang(!) operator?
I need to modify the operation of message passing by overloading this operator?

I need to include logging of the message sent when any actor sends a message to any other actor.
I started by

override def !(msg:Any):Unit =
{
  //logic for writing to logs..
  super.!(msg)
}

This works fine. But, i want to differentiate behavior of !, depending upon the messages I am sending.

actor_name!(arg1,arg2,arg3)
actor_name1!(arg4, arg5)

in the above case, for first ! opertion, i need to perform logging. And for second !, i just want to print on the screen.
How do i differentiate between these two message sending notation in the overriding code?

Answer 1

Maybe like so ?

override def !(msg: Any) {
    msg match {
        case msg@(arg1, arg2, arg3) => /* your logic here... */ ; super ! msg
        case msg@(arg1, arg2) => /* your logic here... */ ; super ! msg
    }
}