In Flex 2 and 3, with Binding, you could automatically copies the value of a property of a source object to a property of a destination object when the source property changed.
Flex 4 has introduced the Bidirectional Binding (also know as “two-way” binding”) that allows to set two objects as the source and the destination for each other.

A lot of Flex components support the itemRenderer property, to customize their item layout.
In this article we’ll use the List component to display the RSS Actionscript.it Last 5 Tutorial content and we’ll define 3 itemRenderers to switch 3 different content views at runtime.

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