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WeakRef class

A weak reference is a reference that does not prevent the object from being garbage collected. It's great that Actionscript 3 has weak references in the EventDispatcher and Dictionary classes. But sometimes you want to create your own weak references. Something along the lines of

var weak:WeakRef = new WeakRef( someObject );

Well, this class lets you do that. To use the class

// Create a weak reference
var weak:Weakref = new WeakRef( obj );

// Later, use the referenced object
var strong = weak.get();
if( strong != null )
{
    // use strong here
}
else
{
    // garbage collector has already disposed of the object
}

If the get method returns null then the object has been garbage collected.