>From lopes@parc.xerox.com Wed Aug  6 18:07:37 1997
>Subject: Re:  traversals
>
>About separate compilation, again.
>
>I said:
>> For example, if step 4 of algorithm 2 is implemented in such a way
>> that the structure of the superclasses is hard-coded, you're in
>> trouble, because if you change the superclass, we need to recompile
>> all its subclasses.
>
>But I meant:
>
>You're in trouble, when the source code of the superclass is not
>available. (e.g. a class in some library) Recompiling the subclasses
>when the supers change is perfectly normal.
>
>Of course the whole issue of separate compilation in Demeter is
>probably a non-problem, because the language is based on a construct
>called class graph, which is always explicitly defined.
>
>Anyway, this goes back to my initial mail yesterday. I'm not
>implementing Demeter, and I have problems of my own :). You are the
>ones who should address this question, and, eventually, discard it.
>(I still don't understand why algorithm 2 doesn't simply call the
>superclasses, though.)
>
>Back to my thesis.
>-Crista
>