From: Robert Dewar <robert_dewar@my-deja.com>
Subject: Re: Ada safety road Was: Which is right ...
Date: 1999/06/08
Date: 1999-06-08T00:00:00+00:00 [thread overview]
Message-ID: <7jk01d$co$1@nnrp1.deja.com> (raw)
In-Reply-To: wcc674yh8ut.fsf@world.std.com
In article <wcc674yh8ut.fsf@world.std.com>,
Robert A Duff <bobduff@world.std.com> wrote:
> Hyman Rosen <hymie@prolifics.com> writes:
> Yeah, and I think the lesson for language designers is to try
> pretty hard to avoid language features with unpredictable
> semantics.
It is easy to get in semantic knots on this issue. For example,
it is reasonable to require a compiler to implement semantics
where it is not predictable from the language what semantics
will be implemented, but it is unreasonable to require a
compiler to implement unpredictable semantics (subtle but
important difference).
Once at an Algol-68 meeting, Gerhard Goos asked exactly what
undefined meant. Someone replied that it meant "unimaginable
chaos", whereupon, Gerhard enquired as to just exactly how he
was expected to implement "unimaginable chaos" in his compiler
:-)
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next prev parent reply other threads:[~1999-06-08 0:00 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-05-30 0:00 Which is right here - GNAT or OA ? Vladimir Olensky
1999-05-30 0:00 ` Robert Dewar
1999-05-31 0:00 ` Vladimir Olensky
1999-05-31 0:00 ` Robert Dewar
1999-06-01 0:00 ` dennison
1999-05-30 0:00 ` Florian Weimer
1999-05-31 0:00 ` Vladimir Olensky
1999-05-31 0:00 ` Robert Dewar
1999-06-05 0:00 ` Vladimir Olensky
1999-06-05 0:00 ` Florian Weimer
1999-06-05 0:00 ` Vladimir Olensky
1999-06-05 0:00 ` Robert Dewar
1999-06-07 0:00 ` Ada safety road Was: Which is right Vladimir Olensky
1999-06-06 0:00 ` Robert Dewar
1999-06-07 0:00 ` Pascal F. Martin
1999-06-07 0:00 ` Vladimir Olensky
1999-06-08 0:00 ` Robert A Duff
1999-06-06 0:00 ` Larry Kilgallen
1999-06-07 0:00 ` Keith Thompson
1999-06-07 0:00 ` Hyman Rosen
1999-06-08 0:00 ` Robert A Duff
1999-06-08 0:00 ` Keith Thompson
1999-06-09 0:00 ` dennison
1999-06-09 0:00 ` Entamology of "Nasal Demons" dennison
1999-06-09 0:00 ` Ada safety road Was: Which is right Robert Dewar
1999-06-09 0:00 ` Tucker Taft
1999-06-09 0:00 ` Robert Dewar
1999-06-08 0:00 ` Robert Dewar [this message]
1999-06-09 0:00 ` dennison
1999-06-08 0:00 ` Robert Dewar
1999-06-07 0:00 ` Keith Thompson
1999-06-08 0:00 ` Robert A Duff
1999-06-08 0:00 ` Robert A Duff
1999-06-14 0:00 ` Ada safety road Franco Mazzanti
1999-06-15 0:00 ` Franco Mazzanti
1999-06-16 0:00 ` Vladimir Olensky
1999-06-10 0:00 ` Ada safety road Was: Which is right Peter Amey
1999-06-10 0:00 ` Markus Kuhn
1999-06-11 0:00 ` Vladimir Olensky
1999-06-12 0:00 ` Robert Dewar
1999-06-12 0:00 ` JP Thornley
1999-06-13 0:00 ` Vladimir Olensky
1999-06-16 0:00 ` William Dale
1999-06-19 0:00 ` JP Thornley
1999-06-21 0:00 ` Robert A Duff
1999-06-13 0:00 ` Vladimir Olensky
1999-06-12 0:00 ` Matthew Heaney
1999-06-13 0:00 ` Vladimir Olensky
1999-06-13 0:00 ` Robert Dewar
1999-06-13 0:00 ` Vladimir Olensky
1999-06-13 0:00 ` Robert Dewar
1999-06-13 0:00 ` Vladimir Olensky
1999-06-13 0:00 ` swhalen
1999-06-01 0:00 ` Which is right here - GNAT or OA ? Tucker Taft
1999-05-31 0:00 ` David Botton
1999-06-01 0:00 ` dennison
1999-06-03 0:00 ` Matthew Heaney
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