One of the best new implemented ECMA features in ActionScript 3.0 is E4X – a native XML dataType in ActionScript 3.0. If you are traditionally used to traversing an xml document in actionScript 2.0 I am sure that you are more than familiar with recursive for-loops and endless firstChild.childNodes[i]… type syntax. E4X is a much better (not to mention standard) approach to parsing XML. You can now simply target a node and use for-each loops to loop thru child nodes.
I built a simple aggregator for my Blog in Flex 2.0 using E4X and it was a piece of cake.
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