Instance Recycling

From ActionScriptWiki

Calling the new operator is very expensive. It is possible to use the same instance of an object over and over again instead of creating new ones.

[edit] Wrong Version

In this example a new Point is created for every iteration of the loop. This is very expensive and not needed.

const n: int = 1024;

for( var i: int = 0; i < n; ++i )
{
	var point: Point = new Point();

	point.x = point.y = Math.random();

	// Do something with "point" ...
}

[edit] Correct Version

The point object does not have to be recreated all the time. One instance of it is enough for the whole loop.

const n: int = 1024;
const point: Point = new Point();

for( var i: int = 0; i < n; ++i )
{
	point.x = point.y = Math.random();

	// Do something with "point" ...
}