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Flex Array Performance: For vs. ForEach

July 13th, 2009 No comments

We made a little test to see the flex performance on parsing an large array.

Here is the experiment:

var size:Number = 10000000;
var arr:Array = [];
for (var i:int=0; i
var time:Number, o:Object;
 
// for()
time = getTimer();
for (i=0; i=0; i--) { arr[i]; }
trace("for reversed test: "+(getTimer()-time)+"ms");
 
// for..in
time = getTimer();
for each(o in arr) { o; }
trace("for each test: "+(getTimer()-time)+"ms");

And here are the results:

for test: 124ms
for reversed test: 110ms
for each test: 261ms

We wish you to use this results wisely !

————————
The TiMeister Team

Categories: Adobe Flash, Adobe Flex & AIR Tags: , , ,