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From: ell@access5.digex.net (Ell)
Subject: Re: Is ADA as good for graphics programming as C?
Date: 1997/07/21
Message-ID: <5r0chv$40e$2@news2.digex.net>#1/1
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 comp.object,comp.software-eng,comp.lang.ada,comp.lang.eiffel,comp.lang.c,comp.lang.c++
Organization: The Universe
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 comp.object,comp.software-eng,comp.lang.ada,comp.lang.eiffel,comp.lang.c,comp.lang.c++
Date: 1997-07-21T00:00:00+00:00
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Douglas A. Gwyn (gwyn@ix.netcom.com) wrote:
:
: Matthew Heaney <mheaney@ni.net> wrote in article
: >
: > Nature (interpret that to mean God, if that suits you) has
: > chosen aggregation as the essential means of systems construction.
 
: I think rather, many natural phenomena are *understood by humans*
: via analysis as aggregative "systems".

I think that aggregation can be shown to exist objectively.  Aggregation,
objects, and systems are not simply a matter of human cognition. 

: One can identify aspects of
: nature that do not fit that mold, 

That doesn't mean aggregation doesn't exist objectively.
 
: > In spite of what you may have heard, your dishwasher, your car, your
: > watch,
: > and even you are constructed using aggregation.  Last time I checked,
: > neither my computer (my little Mac, bless it), nor my stereo, nor my
: > microwave oven were constructed using inheritence - not even (gasp!)
: > multiple inheritence.  Say it ain't so, Joe!

But often one or more aspects of one aggregate are passed on to another
aggregate - inheritance.

Elliott
-- 
"The domain object model is the foundation of OOD."

"We should seek out proven optimal practices and use them."

	~~ The writer