From: rossberg@ps.uni-sb.de
To: "skaller" <skaller@users.sourceforge.net>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Unsoundness is essential
Date: Thu, 4 Oct 2007 23:07:28 +0200 (CEST) [thread overview]
Message-ID: <60599.84.159.34.129.1191532048.squirrel@www.ps.uni-sb.de> (raw)
In-Reply-To: <1191527775.7078.67.camel@rosella.wigram>
skaller wrote:
>
>> Exceptions are /trapped/ errors.
>
> I chose not to accept that definition. I use instead
> "trapped at compile time", meaning "in advance of running
> the program".
As a definition for what?
> Otherwise you could say dynamically typed languages were
> strongly typed and sound.
In fact, technically, they are. People have used the term "unityped" for it.
> C/C++ does this right: if a program is 'ill-formed' then
> a diagnostic must be issued. Throwing an exception silently
> is NOT allowed. [C/C++ doesn't mandate diagnostics always because
> some are too hard to detect]
This paragraph sounds like a contradiction in itself.
More importantly, an OCaml program performing div 0 isn't "ill-formed", it
has a perfectly well-defined, safe semantics (in precisely the same way as
adding a string in Python). See the library docs.
- Andreas
next prev parent reply other threads:[~2007-10-04 21:07 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-03 8:35 Locally-polymorphic exceptions [was: folding over a file] oleg
2007-10-03 11:27 ` kirillkh
2007-10-03 11:48 ` [Caml-list] " Daniel de Rauglaudre
2007-10-03 12:19 ` kirillkh
2007-10-03 12:32 ` Daniel de Rauglaudre
2007-10-03 14:34 ` kirillkh
2007-10-03 20:39 ` Christophe Raffalli
2007-10-03 22:50 ` Unsoundness is essential skaller
2007-10-03 23:13 ` [Caml-list] " Jacques Carette
2007-10-04 1:24 ` skaller
2007-10-04 11:26 ` David Allsopp
2007-10-04 12:45 ` Vincent Hanquez
2007-10-04 15:07 ` skaller
2007-10-03 23:13 ` Vincent Aravantinos
2007-10-04 1:49 ` skaller
2007-10-03 23:28 ` Joshua D. Guttman
2007-10-04 1:52 ` skaller
2007-10-04 2:35 ` Brian Hurt
2007-10-04 7:46 ` Christophe Raffalli
2007-10-04 8:56 ` Arnaud Spiwack
2007-10-04 14:49 ` skaller
2007-10-04 15:00 ` Harrison, John R
2007-10-04 15:29 ` Andrej Bauer
2007-10-04 16:25 ` skaller
2007-10-04 18:17 ` Arnaud Spiwack
2007-10-04 20:54 ` skaller
2007-10-04 22:24 ` Arnaud Spiwack
2007-10-04 16:37 ` skaller
2007-10-04 18:59 ` Christophe Raffalli
2007-10-04 15:04 ` Andrej Bauer
2007-10-04 15:57 ` Christophe Raffalli
2007-10-04 16:03 ` skaller
2007-10-04 20:02 ` Ken Rose
2007-10-04 21:00 ` skaller
2007-10-04 15:31 ` Lukasz Stafiniak
2007-10-04 17:56 ` rossberg
2007-10-04 19:56 ` skaller
2007-10-04 21:07 ` rossberg [this message]
2007-10-04 22:23 ` skaller
2007-10-05 2:48 ` Bárður Árantsson
2007-10-04 2:16 ` Locally-polymorphic exceptions [was: folding over a file] oleg
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