From: Michel Quercia <quercia@cal.enst.fr>
To: "caml-list" <caml-list@inria.fr>
Subject: Re: [Caml-list] strange message
Date: Wed, 14 Mar 2001 21:23:24 +0000 [thread overview]
Message-ID: <01031421275709.07795@haguenauer> (raw)
In-Reply-To: <3AAFCD35.5CD57AD4@versailles.inra.fr>
Le Wed, 14 Mar 2001, vous [Antoine Marin] avez écrit :
> Sorry for this question, but I don't understand why I get this message for this
> small programme :
> let rec rev_write str_buf str_len str_pos = match str_buf.[str_pos] with
> | '\n' -> output stdout str_buf (str_pos + 1) (str_len - str_pos);
> rev_write str_buf str_len (str_pos - 1);
> | _ -> rev_write str_buf str_len (str_pos - 1);;
Cette fonction boucle. Le compilateur attribue à rev_write le type
string -> int -> int -> 'a ce qui signifie que le résultat est indéterminé.
Voici un code correct :
let rec rev_write str_buf str_len str_pos =
if str_len > 0 then
match str_buf.[str_pos] with
| '\n' -> output stdout str_buf (str_pos + 1) (str_len - str_pos);
rev_write str_buf str_pos (str_pos - 1);
| _ -> rev_write str_buf str_len (str_pos - 1)
;;
--
Michel Quercia
57 rue abbé Grégoire, 38000 Grenoble
http://pauillac.inria.fr/~quercia
mailto:michel.quercia@prepas.org
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prev parent reply other threads:[~2001-03-14 20:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-14 19:57 Antoine Marin
2001-03-14 20:36 ` Antoine Marin
2001-03-14 21:23 ` Michel Quercia [this message]
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