"Henning VON ROSEN" <hvrosen / world-online.no> wrote in
<MABBIFGPDKFFOJPHLCLIAEHICCAA.hvrosen / world-online.no>: 
>------=_NextPart_000_0000_01C0CE8E.75E08460
>Sorry, din't find it in pickaxe: 
>
>(1) How(if possible) can I change the value of the class attribute?

...what do you mean by "attribute"?

>
>Say, that a instance at first is known as belonging to a fairly general
>class, and when we gather more information, it turns out to belong more
>precisely to a subclass.
>
...sounds like applying the "strategy"-(or the "state"-) pattern (see
GoF-book) might be appropriate here. 
Regards
Clemens