Since the download available for Flash Builder 4 and Flash Catalyst from Adobe Labs site, there were quite a lot of tutorials, how-to’s and reviews all over the web from Adobe’s Platform Evangelists and a few other prominent developers.
Flash Builder 4 delivers a long list of new features, plus improvements to many existing features. Adobe has compiled a very useful set of videos about the new feature of Flash Builder 4 and Flash Catalyst. The following is a list of the resource and tutorials of Flash Builder 4、Flex 4 SDK adm Flash Catalyst.If you know more please don’t hesitate to let me know. Note: listed in no particular order.

June 16th, 2009
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Now you could load files which you choose into memory to continue the following operation by the way load which new add in class FileReference Flashplayer 10. Then we could determine the type of files by FileReference.load().
Problem Summary: Once I need to get the host, protocol, port, parameters from a given URL with Action-Script. I googled for a class named
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