General purpose instance pool class (feel free to improve :)

Pool.as

package com.realaxy.operators{
  
  import flash.utils.Dictionary;
  
  internal class Pool {
    private var instances : Dictionary =new Dictionary() ;
    private var instanceCounts : Dictionary =new Dictionary() ;
    public function getInstance ( type : Class ) : * {
      var cache : Vector.<*>;
      if ( instanceCounts[type] ) {
        cache = instances[type];
      }else{
        cache = new Vector.<*>();
        instances[type] = cache;
        instanceCounts[type] = 0;
      }
      if ( instanceCounts[type] < cache.length ) {
        return cache[instanceCounts[type]++];
      }else{
        var object : * =new type();
        cache[instanceCounts[type]++] = object;
        return object;
      }
    }
    public function resetCounts ( type : Class ) : void {
      if ( instanceCounts[type] ) {
        instanceCounts[type] = 0;
      }
    }
    public function resetAllCounts (  ) : void {
      for ( var type : Object in instanceCounts ) {
        instanceCounts[type] = 0;
      }
    }
  }
}