Thanks Marcus!

2013/5/16 Marcus Denker <[email protected]>

>
> On May 15, 2013, at 9:43 PM, Sebastian Tleye <[email protected]> wrote:
>
> > Thanks Igor, i think you are right.
> > I am not sure what "isObsolete" does, but for Ring classes, which are
> created dinamically, it doesn't seem that "isObsolete" is useful. (at least
> is my intuition)
> >
>
> Obsolete classes happen if you delete a class, yet there are still
> instances. This is needed as classes do not model history.
> But
>         a) Ring classes are not directly instantiated (they are not
> referenced from the header of the instances)
>         b) They even are able to model history very nicely
>
> So the obsolete concept makes no sense… an obsolete class might even have
> a (Historical) Ring class associated with it
> and Ring would have no problem at all.
>
>         Marcus
>

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