From: Daniel de Rauglaudre <daniel.de_rauglaudre@inria.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Streams
Date: Wed, 10 Apr 2002 13:03:14 +0200 [thread overview]
Message-ID: <20020410130314.I20228@verdot.inria.fr> (raw)
In-Reply-To: <200204091809.g39I9TV03521@demokrit.cas.mcmaster.ca>; from kahl@cas.mcmaster.ca on Tue, Apr 09, 2002 at 02:09:29PM -0400
Hi,
> let pc0 c = parser n
> [< ' x
> when x == c
> ?? (string_of_int n ^ ": pc '" ^ String.make 1 c ^ "'")
> >] -> ();;
The "??" is unuseful for the first element of a stream pattern, because
when it fails, it raises Stream.Failure, not Stream.Error. The "??"
introduces a parameter for Stream.Error. Your code is equivalent to:
let pc0 c = parser n
[< ' x
when x == c
>] -> ();;
It was an error that the OCaml version accepted the "??" for the first
element.
--
Daniel de RAUGLAUDRE
daniel.de_rauglaudre@inria.fr
http://cristal.inria.fr/~ddr/
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next prev parent reply other threads:[~2002-04-10 11:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <F241eHu7RVLCMUWktUq0000fbc1@hotmail.com>
2002-04-09 18:09 ` [Caml-list] Cannot find Stream Parser Documentation Wolfram Kahl
2002-04-10 11:03 ` Daniel de Rauglaudre [this message]
2002-04-11 14:35 ` [Caml-list] Streams Wolfram Kahl
2006-08-10 10:51 Streams Error404
2006-08-10 11:40 ` [Caml-list] Streams Jonathan Roewen
2006-08-10 19:02 ` Chris King
2006-08-10 18:32 ` Martin Jambon
2006-08-11 0:00 ` Jon Harrop
-- strict thread matches above, loose matches on Subject: below --
2002-07-05 23:05 [Caml-list] Re: generic programming Dave Berry
2002-08-02 14:49 ` [Caml-list] Streams Diego Olivier Fernandez Pons
2002-08-02 15:29 ` Alain Frisch
2002-08-03 14:19 ` Diego Olivier Fernandez Pons
2001-03-27 2:12 [Caml-list] Caml Development Kit Patrick M Doane
2001-03-27 3:15 ` Brian Rogoff
2001-03-27 6:48 ` [Caml-list] Streams Daniel de Rauglaudre
[not found] ` <3AC04E85.EE51D597@univ-savoie.fr>
2001-03-27 8:37 ` Daniel de Rauglaudre
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