From: Remi VANICAT <remi.vanicat@labri.u-bordeaux.fr>
To: caml-list@inria.fr
Subject: Re: Syntax for label, NEW PROPOSAL
Date: 15 Mar 2000 20:11:08 +0100 [thread overview]
Message-ID: <ya37lf4gib7.fsf@serveur3-1.labri.u-bordeaux.fr> (raw)
In-Reply-To: Pierre Weis's message of "Wed, 15 Mar 2000 14:58:30 +0100"
Pierre Weis <Pierre.Weis@inria.fr> writes:
> $ ocamlpedantic
> Objective Caml version 2.99+10
>
> # let sum l = List.fold_right ( + ) l 0;;
> ^^^^^
> This expression has type int -> int -> int but is here used with type 'a list
>
> Clearly, there is something wrong now! We may remark that the error
> message is not that clear, but this is a minor point, since error
> messages are never clear enough anyway!
>
> The real problem is that fixing the code makes no good at all to its
> readability (at least that's what I would say):
>
> # let sum l = List.fold_right fun:begin fun x acc:y -> x + y end acc:0;;
> val sum : 'a -> int list -> int = <fun>
here, i prefer to use parenthesis as :
let sum l = List.fold_right fun:(fun x acc:y -> x + y) acc:0;;
it's more readable
also i do want the fun: label (you may change the name, but a label
here is useful) to be able to write
let sum l = List.fold_right acc:0
fun:(fun long multi line function definition here)
but i agreed that the acc label (in fun x acc:y -> x + y) is a pain,
because he forbid the use of usual function here
--
Rémi Vanicat
vanicat@labri.u-bordeaux.fr
http://dept-info.labri.u-bordeaux.fr/~vanicat
next prev parent reply other threads:[~2000-03-17 8:09 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-14 16:53 Syntax for label Don Syme
2000-03-14 18:05 ` Pierre Weis
2000-03-15 3:15 ` Syntax for label, NEW PROPOSAL Jacques Garrigue
2000-03-15 6:58 ` Christophe Raffalli
2000-03-15 21:54 ` Julian Assange
2000-03-15 11:56 ` Wolfram Kahl
2000-03-15 13:58 ` Pierre Weis
2000-03-15 15:26 ` Sven LUTHER
2000-03-17 7:44 ` Pierre Weis
2000-03-15 17:04 ` John Prevost
2000-03-17 10:11 ` Jacques Garrigue
2000-03-15 17:06 ` Markus Mottl
2000-03-15 19:11 ` Remi VANICAT [this message]
2000-03-17 8:30 ` Pierre Weis
2000-03-17 14:05 ` Jacques Garrigue
2000-03-17 16:08 ` Pierre Weis
2000-03-18 10:32 ` Syntax for label, NEW SOLUTION Christophe Raffalli
2000-03-19 2:29 ` Jacques Garrigue
2000-03-20 18:25 ` Christophe Raffalli
2000-03-22 8:37 ` Claudio Sacerdoti Coen
2000-03-21 23:29 ` John Max Skaller
2000-03-29 8:42 ` Semantic of label: The best (only ?) solution to merge both mode Christophe Raffalli
2000-03-29 9:53 ` Christophe Raffalli
2000-03-30 9:49 ` John Max Skaller
2000-03-30 9:39 ` John Max Skaller
2000-03-31 4:34 ` Jacques Garrigue
2000-04-01 1:53 ` John Max Skaller
2000-04-02 19:24 ` Christophe Raffalli
2000-04-04 5:50 ` Jacques Garrigue
2000-04-03 7:57 ` backward compatibility Christophe Raffalli
2000-03-15 21:30 ` Syntax for label, NEW PROPOSAL John Max Skaller
2000-03-16 2:55 ` Jacques Garrigue
2000-03-17 15:13 ` Pierre Weis
2000-03-17 17:33 ` Wolfram Kahl
2000-03-18 11:59 ` Jacques Garrigue
2000-03-21 16:51 ` Pascal Brisset
2000-03-23 11:14 ` Nicolas barnier
2000-03-24 9:54 ` labels & ocaml 3 & co David Mentré
2000-03-24 12:19 ` David Mentré
2000-03-21 22:22 ` Unsigned integers? John Max Skaller
2000-03-22 16:22 ` Sven LUTHER
2000-03-23 2:08 ` Max Skaller
2000-03-23 7:50 ` Sven LUTHER
2000-03-24 2:50 ` Jacques Garrigue
2000-03-24 15:59 ` Xavier Leroy
2000-03-25 4:03 ` John Max Skaller
2000-03-24 14:50 ` Xavier Leroy
2000-03-22 17:05 ` Jean-Christophe Filliatre
2000-03-22 19:10 ` Markus Mottl
2000-03-23 2:41 ` Max Skaller
2000-03-22 19:47 ` Xavier Leroy
2000-03-23 12:55 ` John Max Skaller
2000-03-16 8:50 ` Syntax for label, NEW PROPOSAL Pascal Brisset
2000-03-17 11:15 ` Sven LUTHER
2000-03-18 0:04 ` Syntax for label, ANOTHER " Steven Thomson
2000-03-15 20:39 ` Syntax for label (and more) Xavier Leroy
2000-03-17 10:03 ` Christian RINDERKNECHT
2000-03-17 17:19 ` Christophe Raffalli
2000-03-21 1:29 ` Markus Mottl
2000-03-15 20:40 Syntax for label, NEW PROPOSAL Don Syme
2000-03-17 9:48 ` Jacques Garrigue
2000-03-17 17:34 ` Dave Mason
2000-03-18 0:26 ` Jacques Garrigue
2000-03-23 13:07 ` Sven LUTHER
2000-03-17 17:03 Don Syme
2000-03-17 19:24 ` John Prevost
2000-03-17 21:33 Damien Doligez
2000-03-18 21:07 ` Frank Atanassow
2000-03-18 22:40 ` John Prevost
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