The latest and piping-hot version of Flex is Flex SDK 4. How different is it from Flex 3? Let’s take a look.
The code name for Flex SDK 3 is Moxie, while that of Flex SDK 4 is Gumbo.
In Flex 3, the layout of components and containers are defined inside individual controls. Halo components which include List, TileList, and HorizontalList are used. These Halo components share the same functionality but for their layouts. Still, their layout logic is defined within these component classes.
Flex 3 vs Flex 4
In Flex 4, the layout has been decoupled from components. Spark components are used in Flex 4 which includes Application, List, ButtonBar, and Panel.These Spark components can define their layouts declaratively. In all of these components, containment is managed by the Group class and the layout of the Group’s children is delegated to an associated layout object.
Popularity: 16%
