Joan Lafferty is the Flex SDK Quality Lead. She has worked on the quality of the Flex framework for more than four years. Before Flex, Joan worked in Quality Engineering at Macromedia on the product Central. Joan has tested most of the Managers for the framework, itemRenderers, CSS capabilities, the Marshall Plan, and a number of the components and containers.

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Differences between Flex 3 and Flex 4

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Learn about the differences in architecture, components, layouts, use of states, and effects.