From: Jean-Christophe Filliatre <filliatr@lri.fr>
To: "Haoyang Wang" <hywang@pobox.com>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Today's inflamatory opinion: exceptions are bad
Date: Sun, 10 Dec 2006 22:43:15 +0100 [thread overview]
Message-ID: <17788.32627.764907.571053@serveur9-10.lri.fr> (raw)
In-Reply-To: <e3e02b3f0612101115h3da8d361y75ba8ba8a3f56998@mail.gmail.com>
> > # Use exceptions only for exceptional situations.
May be I've been misunderstood in my quote of Kernighan & Pike.
I simply think that there is no need to use exceptions when
"exceptional" cases are as frequent as "normal" ones. As others
already said, using option types is a good alternative. And the
efficiency is similar (it happens that I recently made a benchmark on
this particular point and I found out equivalent timings).
> Even today, exceptions are used heavily in coq. Could you comment on
> your experiences with the usage of caml exceptions in coq? Are
> exceptions raised there "only for exceptional situations"?
The Coq proof assistant has been developed by many people and I only
contributed to a small part of it (mostly in the kernel). For this
part, at least, it is indeed true that exceptions are used only for
exceptional situations, mostly to signal typing errors. They are then
handled globally, at the top level of the system.
--
Jean-Christophe
next prev parent reply other threads:[~2006-12-10 21:43 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-10 1:42 Brian Hurt
2006-12-10 2:40 ` [Caml-list] " skaller
2006-12-10 2:51 ` Martin Jambon
2006-12-10 3:35 ` Chris King
2006-12-10 6:32 ` Jon Harrop
2006-12-10 19:07 ` brogoff
2006-12-10 18:04 ` Richard Jones
2006-12-10 23:27 ` Chris King
2006-12-11 15:55 ` Richard Jones
2006-12-15 11:13 ` Frédéric Gava
2006-12-11 17:28 ` Mike Lin
2006-12-11 20:09 ` Richard Jones
2006-12-11 23:38 ` Olivier Andrieu
[not found] ` <C841DA73-83D4-4CDD-BF4A-EA803C6D6A08@vub.ac.be>
2006-12-23 4:23 ` Ocaml checked exceptions Chris King
2006-12-10 6:30 ` [Caml-list] Today's inflamatory opinion: exceptions are bad malc
2006-12-10 6:36 ` malc
2006-12-10 6:56 ` Jon Harrop
2006-12-10 9:51 ` Andreas Rossberg
2006-12-10 11:00 ` Tom
2006-12-10 11:25 ` Andreas Rossberg
2006-12-10 13:27 ` Jean-Christophe Filliatre
2006-12-10 19:15 ` Haoyang Wang
2006-12-10 21:43 ` Jean-Christophe Filliatre [this message]
2006-12-11 13:10 ` Diego Olivier FERNANDEZ PONS
2006-12-10 18:31 ` Serge Aleynikov
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