Both Flash Builder Pro and the free alternative, Flash Develop, include an invaluable tool called the memory profiler. Take full advantage of this tool to increase the performance of your apps and prevent browser crashes. We'll also cover some common mistakes when building interactive web applications. This presentation is for anyone who is unfamiliar with the profiler or hasn't used it before.

1. Improve Application Performance Using the Profiler By Chris Black @chrisjblack

2. Aw, Snap!

3. What Causes a Browser to Crash? Poor code written in ANY programming language All browsers in the previous slides crashed using JavaScript Both JavaScript and ActionScript can perform poorly and crash the browser when written incorrectly

4. Background I am a self employed… ActionScript developer Mobile applications developer Google AdWords consultant My devices… BlackBerry Android iPod Touch

5. Why is Memory mgmt important?

6. Mobile Development When building applications for mobile it is even more important to consider memory management Devices are running on a fraction of the CPU and memory of desktop computers

7. Reputation of Scripting Languages Flash doesn’t crash browsers, poor development crashes browsers in all languages People see the result, not the cause

8. How to crash the Browser

9. Infinite Loops while(1){ n += “You shouldn’t have done that”; } // this JS will crash IE, Firefox and Safari var data = new Array(“1”); for(var n; n < data.length; n++){ data.push(“1”); }

10. Memory Leaks addNextItem(data){ var item = new Item(data); } This is where the memory profiler comes in handy!

11. Managing Memory

12. Garbage Collection Runtime removes unused items Garbage collection is expensive and CPU intensive Re-use display objects as much as possible

13. Store Data to the Hard Drive Saves loading time and allows for re-use of components Requires additional management

14. Memory Profiler FREE memory profiler with Flash Develop Also comes with Flash Builder Pro and FDT

15. Live Demo Use the profiler in Flash Develop to manage memory within your application

16. Questions?