From: Mathieu Bouchard <matju@...>
Date: 2005-04-24T11:53:44+09:00
Subject: Re: [ANN] Article: Seeing Metaclasses Clearly

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On Sun, 24 Apr 2005, Mathieu Bouchard wrote:

> (note: the general instance-of such as Module#=3D=3D=3D is transitive in =
the=20
> sense that it also includes instance-of-subclass-of and so on: every=20
> object is an instance-of Object.)

Oh, and I should have added two things:

1. The diagrams that say "instance-of" really mean "direct-instance-of"=20
whereas the other instance-ofs not shown in the diagrams are compositions=
=20
of a subclass-of and instance-of relationship.

2. I'm really beginning to think that if Ruby had had Self's inheritance=20
model (... plus prioritisation of superobjects), it would be so much less=
=20
confusing that, even with all the ruby-talk postings about all the cool=20
things you can do only with Self's inheritance model, it wouldn't nearly=20
reach the level of bandwidth that the current confusion is generating.=20
There's so much more to say about confusing/complicated systems than about=
=20
clean ones, really.

I *think* I've heard Dave Thomas speak against class-oriented object=20
models recently, but haven't heard him elaborate on it though. What I say=
=20
in #2 is only _my_ opinion on the topic.

Of course I can't really expect #2 to happen in this decade, given the=20
amount of opposition I get when I propose *just* merging the Class and=20
Module concepts. Well, unless unexpectedly unexpected changes of heart=20
occur soon enough in the minds of those who are in positions of influence=
=20
wrt Ruby 2.

  ,-o---------o---------o---------o-. ,----.                            |
  | The Diagram is the Program (TM) | |  ,-o----------------------------o-.
  `-o-----------------------------o-' |  | Mathieu Bouchard (Montr=E9al QC)=
 |
    |                             |---'  |      http://artengine.ca/matju |
    |                             |      `-o------------------------------'
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