Get class size of object

[Tobias Pankrath]

> Is this a mathematical fact that you have proven for all 
> languages? I'd like to see your proof if it's not bigger than 
> what will fit in a post.

That's so obvious, that you should be able to come up with one 
yourself. Maybe you never experienced a situation where it was 
clear, but that doesn't mean I need to come up with a proof, just 
because you are to lazy to do it yourself.