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From: David Starner <dstarner98@aasaa.ofe.org>
Subject: Re: Ada OO Mechanism
Date: 1999/05/24
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Newsgroups: comp.lang.ada
Date: 1999-05-25T02:13:01+00:00
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Hyman Rosen wrote:
> 
> Robert Dewar <robert_dewar@my-dejanews.com> writes:
> > Well obviously the case of extending an algebra that implements
> > symmetrical binary operators is a case more easily handled in
> > Ada than in C, I assume a specific example is not needed here?
> 
> Actually, I would like a specific example - I don't understand
> "an algebra that implements symmetrical binary operators" or
> why it's easier in Ada. I'm not being difficult here - I really
> just don't understand the meaning of the quoted phrase, so a
> bit of actual code would go a long way to clarify things.

Think of vectors and the dot product. C++ forces you to view one vector
as significant (a becomes "this" inside dot function, it's called
a.dot(b)), even though in a dot b, a and b are equal significance - dot
product is a symmetric function. Ada makes them of equal importnatce in
the dot function body and call.