From: Thomas Fischbacher <Thomas.Fischbacher@Physik.Uni-Muenchen.DE>
To: "Frédéric Gava" <gava@univ-paris12.fr>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] (int * int) <> int*int ?
Date: Thu, 23 Feb 2006 19:33:09 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.63.0602231928310.29728@eiger.cip.physik.uni-muenchen.de> (raw)
In-Reply-To: <006101c6389e$9bbbc440$1f570b50@mshome.net>
> is anybody can semantically explain why this 2 types are differents ?
They are implemented in a different way internally. This is one of the
dark corners of OCaml.
(To my understanding, a constructor can carry multiple arguments, but
depending on whether you put the parens or not, the tuple will be folded
into a multi-slot constructor, or the constructor will have a single slot,
which is a tuple.)
And yes, this *can* give you major headache if you first discover it when
you try to raise a complex exception with sub-structure from within C
code.
We had this discussion earlier:
http://groups.google.com/group/fa.caml/msg/86fb0679c8d11b1b?hl=en
--
regards, tf@cip.physik.uni-muenchen.de (o_
Thomas Fischbacher - http://www.cip.physik.uni-muenchen.de/~tf //\
(lambda (n) ((lambda (p q r) (p p q r)) (lambda (g x y) V_/_
(if (= x 0) y (g g (- x 1) (* x y)))) n 1)) (Debian GNU)
next prev parent reply other threads:[~2006-02-23 18:33 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-23 17:28 Frédéric Gava
2006-02-23 18:33 ` [Caml-list] " Eric Cooper
2006-02-23 19:03 ` Martin Jambon
2006-02-23 19:07 ` Frédéric Gava
2006-02-23 20:15 ` Brian Hurt
2006-02-23 21:30 ` Frédéric Gava
2006-02-23 21:57 ` Brian Hurt
2006-02-23 22:30 ` Frédéric Gava
2006-02-23 22:50 ` Brian Hurt
2006-02-23 23:07 ` Frédéric Gava
2006-02-24 8:38 ` Alessandro Baretta
2006-02-24 12:59 ` Damien Doligez
2006-02-23 18:33 ` Thomas Fischbacher [this message]
2006-02-23 18:56 ` David Brown
2006-02-23 19:24 ` Frédéric Gava
2006-02-23 19:37 ` Frédéric Gava
2006-02-23 19:45 ` Frédéric Gava
2006-02-24 0:01 ` Jacques Garrigue
2006-02-24 0:18 ` Lukasz Stafiniak
2006-02-24 2:17 ` Jacques Garrigue
2006-02-24 13:07 ` Alain Frisch
2006-02-25 17:42 ` Vincent Balat
2006-02-25 18:30 ` Nicolas Pouillard
2006-02-25 19:09 ` Richard Jones
2006-03-01 12:48 ` Nicolas Pouillard
2006-02-25 23:17 ` Christophe TROESTLER
2006-03-01 13:01 ` Nicolas Pouillard
2006-02-27 11:14 ` camlp4 renovation [was: [Caml-list] (int * int) <> int*int ?] Hendrik Tews
2006-02-24 13:39 ` [Caml-list] (int * int) <> int*int ? Nicolas Cannasse
2006-02-24 14:49 ` Frédéric Gava
2006-02-24 8:27 ` also for tagged records? [Was: Re: [Caml-list] (int * int) <> int*int ?] Sebastian Egner
2006-02-24 14:01 ` Thomas Fischbacher
2006-02-23 20:58 ` [Caml-list] (int * int) <> int*int ? Jon Harrop
2006-02-23 21:36 ` Frédéric Gava
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