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Newsgroups: comp.lang.ada
Subject: Re: Basic Explaination of OO in Ada
From: Georg Bauhaus <bauhaus@futureapps.de>
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Date: Mon, 18 Sep 2006 18:43:29 +0200
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Date: 2006-09-18T18:38:05+02:00
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On Mon, 2006-09-18 at 08:24 -0700, richard.charts@gmail.com wrote:
> I can't seem to wrap my head around Ada's OO methods.  Is it
> that there is simply nothing like a class in C++ or Java?

There is something like a class in C++ or Java, but not exactly
the same thing. (In fact, writing for the JVM in Ada is pretty
straightforward.) One difference is that you don't declare the
"class"'s operations within the class, but right next to it,
in the containing package.

Another difference is that you won't be using pointers of
references that much, because dispatching works mostly without
them.

However, you will notice that there is a 'Class attribute in
Ada. After you have some clarifying examples, you might want
to look at it.

A good book by John English is available on-line, see
http://www.it.bton.ac.uk/staff/je/adacraft/