CODEWITHSUNDEEP
eclipsescalaakka
city
city

Reputation: 2154

AKKA receive method reports error

I'm working on eclipse under ubuntu 12.04 with scala 2.10 and Akka 2.2.1.

abstract class Node extends Actor {
  var n : Array[Node] // def n
  //..... I do not def receive here
}

class FNode extends Node {
  def receive = {
    case message => for(i <- 0 until n.size)
      n(i) ! message  // n is array. send message to all elements in n
      // ....
  }
}

Now, eclipse always reports 

value ! is not a member of Node.

I have no idea how to fix. I waste more than 3 hours on this. I have done what I can do, but I still can not solve it. Thanks !

Upvotes: 1

Views: 78

Answers (2)

joescii
joescii

Reputation: 6543

I believe the problem is that ! is defined for the ActorRef type, not the Actor type which your Node type extends.

Upvotes: 1

Heiko Seeberger
Heiko Seeberger

Reputation: 3722

You can't send messages to an Actor, but only to an ActorRef. Change n to an Array[ActorRef] and it should work.

By the way, you can iterate collections and arrays easier and possibly more efficient, e.g.

n foreach (ref => ref ! message)

Upvotes: 4

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