Comments on: ActionScript 3.0 Prototype Design Pattern: A Minimalist Example

By: Bill Sanders

Bill Sanders — Tue, 04 Nov 2008 20:44:08 +0000

Simon,

I will definitely try that. Maybe you could provide a little more information to illustrate exactly how you’d recommend doing that.

Thank you very much,
Bill

By: Bill Sanders

Bill Sanders — Tue, 04 Nov 2008 20:42:08 +0000

Jiri,

Thank you for the link. That is an interesting article on cloning in ActionScript 3.0. I believe that readers of this list will find it very instructive.

Kindest regards,
Bill

By: Simon

Simon — Wed, 29 Oct 2008 17:04:31 +0000

If you want your cloned object to inherit the methods of your initial object, you might wanna try either
1 ) registerClassAlias(”Cat”,Cat);
2 ) putting the metadata tag [RemoteClass(alias="Cat")] on top of your cat class.

By: Jiri

Jiri — Wed, 29 Oct 2008 14:41:00 +0000

Maybe this is an interesting article on how to copy the object and preserve the methods.
http://blog.comtaste.com/2007/10/improving_object_copy.html

By: Bill

Bill — Wed, 29 Oct 2008 09:47:37 +0000

Hi Michael,

That sounds like a good idea. Would you mind providing a Prototype class example using ObjectUtil.copy() to illustrate exactly what you mean? (Just the Prototype class–not the whole pattern.)

Also, since serialization is a key issue, could you elaborate a bit on what you mean by registerClassAlias required in all subclasses?

While the example I made is very simple, I had to jump through several hoops to get it working right and the way GoF intended as far as I understood it. I’m hoping to add something a little more substantive using the Prototype design pattern, and I’d really like to see an alternative to the ByteArray clone.

Thanks for the idea,
Bill

By: Michael

Michael — Tue, 28 Oct 2008 23:22:22 +0000

Why not just use ObjectUtil.copy()? You’re doing the exact same thing with your base class as is executed there.

There is also a problem with serializing data wherein you have to use registerClassAlias in all your subclasses to make cloning work…