Help with code? is this shorthand?

programming flash
1

Hello - I’m reading a new book on OOP with actionscript and they tend to use some shorthand code that I’m not familiar with at all - I wish there was somewhere where that listed shorthand coding for actionscript!

Anyways, one of the projects involves building a Broadcaster class which which broadcasts events - I’m having trouble making out how some of the code works seeing as though I’ve never seen it before. Here is the finished class file - I’ve highlighted what I’m confused on in red… The class works fine, but I like to know what’s actually going on…

Thanks in advance

 private var __listeners:Array;
 
 function Broadcaster () 
 {
  init();
 }
 
 //PRIVATE
 
 private function init():Void 
 {
  __listeners = [];
 }
 
 //PUBLIC
 
 public function addEventListener (evnt:String, lstnr:Object, mappedTo:String):Boolean 
 {
  var ev:String;
  var li:Object;
  for (var i in __listeners) {
   ev = __listeners*.event;
   li = __listeners*.listener;
   if (ev == evnt && li == lstnr) return false;
  }
  __listeners.push({event:evnt, listener:lstnr, mappedTo:mappedTo});
  return true;
 }
 
  public function removeEventListener(evnt:String, lstnr:Object):Boolean
 {
  var ev:String;
  var li:Object;
  for (var i = 0; i < __listeners.length; i++){
   if (ev == evnt && li == lstnr){
    __listeners.splice(i,1);
    return true;
   }
  }
  return false;
 }
 
 public function dispatchEvent(evnt:String, params:Object):Void
 {
  var evtObj = {type:evnt, parameters:params};
  for (var i:String in __listeners) {
   if (__listeners*.event == evnt) {
[COLOR=red]    __listeners*.listener[evnt](evtObj);
    __listeners*.listener[__listeners*.mappedTo](evtObj);
   }
  }
  this[evnt + "Handler"](evtObj);[/COLOR]
 }
 
}