ActionScript 3 Object Oriented Programming "Overloaded" Constructor via static method
Example
Constructor overloading is not available in As3.
In order to provide a different way to retrieve an instance of a class, a public static method can be provided to serve as an alternative "constructor".
An example for that is flash.geom.Point, which represents a 2D point object.
The coordinates to define the point can be
-
cartesian in the regular constructor
public function Point(x:Number = 0, y:Number = 0)example usage:
var point:Point = new Point(2, -.5); -
polar in a static method
public static function polar(len:Number, angle:Number):Pointexample usage:
var point:Point = Point.polar(12, .7 * Math.PI);Because it is not an actual constructor, there's no
newkeyword.
