Re: Introducing Nimoy: A minimal experimental actor library

[evacchi]

news: no changes on the surface, a few internal changes. New API: support for 
"actor channels" a thin wrapper around shared channels
    
    
    let t = createTopology()
    let sink1 = allocActorChannel[int]()
    let sink2 = allocActorChannel[int]()
    
    # declare output sinks
    let sink1Ref = t.sinkRef((x: int) => sink1.send(x*100))
    let sink2Ref = t.sinkRef((x: int) => sink2.send(x))
    
    # broadcast to both sinks
    let bref     = t.broadcastRef(sink1Ref, sink2Ref)
    
    # map to the broadcast
    let map3Ref  = t.nodeRef((x: int) => x+7,  bref)
    
    # map to map3
    let fanInRef = t.nodeRef((x: int) => ( echo("fan in = ", x); x ), map3Ref)
    
    # two nodes that both go into fanIn
    let map1Ref  = t.nodeRef((x: int) => x*2, fanInRef)
    let map2Ref  = t.nodeRef((x: int) => x-1, fanInRef)
    
    # send data to both the sources
    for i in 0..10:
      map1Ref ! i
      map2Ref ! i
    
    for i in 0..10:
      echo sink1.recv()
      echo sink2.recv()