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From: Georg Bauhaus <sb463ba@l1-hrz.uni-duisburg.de>
Newsgroups: comp.lang.ada
Subject: Re: Windows Ada database support.
Date: Thu, 9 Dec 2004 12:20:38 +0000 (UTC)
Organization: GMUGHDU
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Date: 2004-12-09T12:20:38+00:00
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Dmitry A. Kazakov <mailbox@dmitry-kazakov.de> wrote:
: We have tasks and protected objects. Add here marshaling parameters. So you
: will need by-value semantics for types of those. Hence, allow T'Class for
: everything. You will then need interface inheritance from concrete types
: (to have automatic user-defined type conversions between local and remote
: types). That drags MI. Do not forget to make tasks and protected objects
: OO. Something like COM/DCOM will be also very useful...

And you end up with the problems of value copying (and externally stored
data). Have a lookt at purely functional programs. :-) Time, memory,
updates, and concurrent updates, are not your friend when you prefer
good abstractions :-)

-- Georg