Alright, so what's the point of even using my Node as a base class? If it's going to override my methods and do whatever it wants, there's really no point in inheriting from my class.

That's exactly right. Sometimes there really is no point in inheriting from your class. By checking for isa("Node"), you're requiring the user to do so, even if there is no other reason. The duck typing lets them use inheritance if it makes sense, or a complete reimplementation if that makes more sense. It gives the user more flexibility.

PS: Sorry I didn't reply to your later thoughts, I haven't had a chance to digest them all the way. I might revisit this post later and see if I have anything more to say.

In reply to Re^3: isa() on any scalar by revdiablo
in thread isa() on any scalar by mrborisguy

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