promises-multiplecallbacks

multicallbacks.js

var t1 = Event.subscribe('asyncOp',function(data){
  //Listener for the data that comes in
  // when the event happens.
});

async(data, function(response){
  Event.dispatch('asyncOp',response);
});

var t2 = Event.subscribe('asyncOp',function(data){
  //Listener for the data that comes in
  // when the event happens.

  // This might never fire if we subscribe after the event
  // already fired.
});