cloning/invocation
Jecel Assumpcao Jr
jecel at merlintec.com
Fri Aug 30 22:36:09 UTC 2002
I am going to heavily edit this so it doesn't become another #removeAll:
thread (where, btw, I agree with Richard)
On Thursday 29 August 2002 18:52, Marcel Weiher wrote:
> > I hope that the C example will make what I am trying to say
> > clearer.
>
> Yes, it did. It made it clear that you are (a) using a somewhat
> creative point of view wrt 'copying' and (b) still wrong, even if I
> accepted that POV (which I don't).
Sorry about that - I wrote another message ("c correction") explaining
that I was wrong and you were right about C. I guess I have been
jumping back and forth between to many different languages lately :-)
> I am saying that I want something like (1) to be usable with objects
> as well as methods.
Yes, that is what am interested in knowing more about. If I have a class
with "a" and "b" parameters, and "c" and "d" regular instance
variables, what should the values of "c" and "d" be for a new instance?
The Smalltalk way would be for them to be initialized to nil, I
suppose. Since the new object creation looks like a message send, can I
think of it as a contructor (in the C++ sense) with code that can set
"c" and "d" in the new instance?
> Well, I have a bit of a problem with a "unifying mechanism" that is
> used neither (a) by the user nor (b) by the implementation. If there
> is no actual leverage, maybe the mechanism isn't actually useful?
It is used by the user when dealing with the debugger.
> I was just following up on Alan's comments about "Exemplars". Not
> sure what he has in mind there, but it does sound similar in some
> respects.
I would guess he was talking about this paper:
W.R. LaLonde, D. Thomas, and J.R. Pugh.
"An Exemplar Based Smalltalk".
In Proceedings of the 1st Conference on Object-Oriented Programming
Systems, Languages and Applications (OOPSLA '86), Portland, Oregon, ACM
Sigplan Notices (21)11 , pp. 322--330, 1986.
I haven't read this paper since 1987, so while I can't remember any
significant difference between this and Mario's Smalltalk-in-Self that
doesn't mean that there weren't any.
-- Jecel
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