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We're going to keep this post lean and mean, and get down to business with 10 Tips that will keep your Flex applications fast, lean, and responsive. The tips are focused around three best practices rules. Rule # 1: Clean up after yourself -- In general, it is good practice to maintain clean code. Not only in the sense of having properly formatted and readable code, but also code that leaves nothing behind... no memory leaks, no cpu hogs, nothing but a clean object that can be reclaimed by the GC.
Have you ever had the need to manage multiple data sources in your application? Perhaps in development you want pull from one data source, and when you are running on a hosted server, pull from another data source. Well, here is an extremely basic, yet useful tip for doing exactly that.
Here's a quick tip when working with XML in Flex. E4X is great in most scenarios, it allows you to easily traverse and filter XML-based data structures, and in most cases it is your friend. However, one area where E4X struggles is if you have an XML structure where a node name contains a dash "-" character. Here's how you can get around that issue.
Here's another handy AIR tip that goes hand-in-hand with my previous tip on accessing application descriptors. Did you know that you can customize the user-agent setting for your AIR applications?
In a number of cases, it is a lot easier to format text for display with HTML, rather than create an ActionScript based component to render complex-formatted text. This is especially the case when you have mixed content that should be displayed inline within the content (images, tables, text wrapping, etc...). Here are a few tricks that you can use to fully take advantage of the mx:HTML control within your applications.
Here's a quick tip to help you squeeze extra performance out of your Flex/ActionScript applications when looping over and crunching lots of data on the client side. Use the dictionary class or associative arrays when you can!
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