ActionScript 3 - Removing Duplicates in ArrayCollection

Question

I have an ArrayCollection of a list of usernames and user id's. In this list there are duplicates that I need to remove. I've searched the internet and while there are a lot of example of this using Arrays, I can't find any clear examples using ArrayCollection's.

Answer 1

The should be simpler then the other solution.

function removeDuplicatesInArray(val:*, index:uint, array:Array):Boolean {
  return array.indexOf(val) == array.lastIndexOf(val);
}

function removeDuplicatesInCollection(collection:ArrayCollection):ArrayCollection {
  collection.source = collection.source.filter(removeDuplicatesInArray);

  return collection;
}