From: Robert Dewar <robert_dewar@my-deja.com>
Subject: Re: C/C++ programmer giving Ada95 a chance -- writing an emulator.
Date: 2000/04/01
Date: 2000-04-01T00:00:00+00:00 [thread overview]
Message-ID: <8c5015$hda$1@nnrp1.deja.com> (raw)
In-Reply-To: 38E2DC8A.45AE7226@research.canon.com.au
In article <38E2DC8A.45AE7226@research.canon.com.au>,
Geoff Bull <geoff@research.canon.com.au> wrote:
> I don't think it is any clearer or better than my original.
I disagree, the use of general access-to-procedure values is
far less reliable, and has far less constrained semantics. The
use of explicit access-to-procedure values suffers from much
of the same problems as gotos.
Just as we prefer to replace a network of gotos with a case
statement, we prefer to replace the use of access-to-procedure
with dynamic dispatching where possible for many reasons.
As you note, there is very rarely any significant penalty for
this and this transformation is in fact a very nice example.
The version with tagged types is a little more complex
semantically, and that does have to be taken into
consideration.
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Before you buy.
next prev parent reply other threads:[~2000-04-01 0:00 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <38e148e2.5089627@news.shreve.net>
2000-03-28 0:00 ` C/C++ programmer giving Ada95 a chance -- writing an emulator Juergen Pfeifer
2000-03-28 0:00 ` Jim Rogers
2000-03-29 0:00 ` Ed Falis
2000-03-29 0:00 ` James S. Rogers
2000-03-29 0:00 ` Robert Dewar
2000-03-29 0:00 ` Jean-Marc Bourguet
2000-03-30 0:00 ` Geoff Bull
2000-03-30 0:00 ` tmoran
2000-04-01 0:00 ` Robert Dewar [this message]
2000-03-28 0:00 ` Geoff Bull
2000-03-28 0:00 ` Jean-Marc Bourguet
2000-03-28 0:00 ` Ken Garlington
[not found] ` <38e19656.17008608@news.shreve.net>
2000-03-29 0:00 ` Marc A. Criley
2000-03-29 0:00 ` David Starner
2000-03-29 0:00 ` Robert A Duff
2000-03-30 0:00 ` Geoff Bull
2000-04-01 0:00 ` Robert Dewar
2000-03-29 0:00 ` Robert Dewar
2000-03-29 0:00 ` Marin D. Condic
2000-03-29 0:00 ` Robert A Duff
2000-03-29 0:00 ` Marin D. Condic
2000-03-29 0:00 ` Jean-Marc Bourguet
2000-03-29 0:00 ` Robert Dewar
2000-03-30 0:00 ` Jean-Marc Bourguet
2000-04-01 0:00 ` Robert Dewar
2000-03-30 0:00 ` Geoff Bull
2000-04-01 0:00 ` Robert Dewar
2000-04-02 0:00 ` Geoff Bull
2000-04-02 0:00 ` Robert Dewar
2000-04-02 0:00 ` swhalen
2000-03-29 0:00 ` swhalen
2000-03-29 0:00 ` Robert Dewar
2000-03-30 0:00 ` swhalen
2000-03-29 0:00 ` Marin D. Condic
2000-03-30 0:00 ` Ken Garlington
2000-03-30 0:00 ` Samuel T. Harris
2000-04-01 0:00 ` Robert Dewar
2000-04-05 0:00 ` Robert A Duff
2000-03-30 0:00 ` Geoff Bull
[not found] ` <38e7e951.8384503@news.shreve.net>
2000-04-02 0:00 ` Jean-Pierre Rosen
2000-04-02 0:00 ` Robert Dewar
2000-04-03 0:00 ` Paul Graham
2000-04-06 0:00 ` Robert Dewar
2000-04-06 0:00 ` Larry Kilgallen
2000-04-06 0:00 ` Robert Dewar
2000-04-06 0:00 ` Gautier
2000-04-07 0:00 ` Robert Dewar
2000-04-07 0:00 ` Gautier
[not found] <38E3DBD7.27F5B246@acenet.com.au>
2000-03-31 0:00 ` tmoran
2000-03-31 0:00 ` Geoff Bull
2000-04-01 0:00 ` Tucker Taft
2000-04-02 0:00 ` Geoff Bull
2000-04-02 0:00 ` Robert Dewar
2000-04-02 0:00 ` Geoff Bull
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