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Date: Wed, 16 Jul 2008 08:33:25 +0200
From: Georg Bauhaus <rm.tsoh.plus-bug.bauhaus@maps.futureapps.de>
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Subject: Re: Ada OOP alternatives?
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Date: 2008-07-16T08:33:26+02:00
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Robert A Duff wrote:

> As for other (non-Ichbiah) designs, well I've seen various
> proposals for "package types", treating Ada packages like "classes" in
> languages like Simula-67, Java, C++, etc.  I'm not sure that works.
> E.g. the question arises whether types declared in two different
> "package objects" of the same "package type" should be the same type.
> I'm not sure it does _not_ work, either.  ;-)

Hasn't the package type returned---or at least a flavor of
package type---as JGNAT's or AppletMagic's or MGNAT's
Ada tagged <-> VM class? :-) E.g.

  package P is

     type P_Obj ...  -- AppletMagic
     type Typ ...  -- JGNAT

  end P;


Meyer has collected a question about Ada's type syntax which
is, Why hasn't Ada used the same syntax for the pair (type,
operations) which is does use for (protected type, operations)?