From: Markus Mottl <mottl@miss.wu-wien.ac.at>
To: Patrick M Doane <patrick@watson.org>
Cc: Stefan Monnier <monnier+lists/caml/news/@RUM.cs.yale.edu>,
caml-list@inria.fr
Subject: Re: bottom types and threaded exits
Date: Mon, 2 Oct 2000 18:28:09 +0200 [thread overview]
Message-ID: <20001002182809.A13821@miss.wu-wien.ac.at> (raw)
In-Reply-To: <Pine.BSF.3.96.1001002090156.68919C-100000@fledge.watson.org>; from patrick@watson.org on Mon, Oct 02, 2000 at 09:11:01 -0400
On Mon, 02 Oct 2000, Patrick M Doane wrote:
> This may be too obvious to point out, but that statement isn't always
> true. From the Pervasives library:
>
> val input_value : in_channel -> 'a
>
> clearly returns. I don't quite understood why the return type isn't
> a monomorphic type variable though.
The "input_value"-function is unfortunately not type safe: you can "cast"
whatever data you get from the channel to any kind of type - whether this
is correct or not. There is currently no better way to do it if you want to
reconstruct marshalled data (data that was sent with output_value). You
have to trust that the OCaml-data you get is of the type you expect.
Pierre mentioned that there is work going on in this field (a PhD-thesis)
that should make I/O much safer. Is there any news about this?
Best regards,
Markus Mottl
--
Markus Mottl, mottl@miss.wu-wien.ac.at, http://miss.wu-wien.ac.at/~mottl
next prev parent reply other threads:[~2000-10-02 19:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-23 14:25 Julian Assange
2000-09-24 19:14 ` Pierre Weis
2000-09-25 10:08 ` Remi VANICAT
2000-09-25 18:38 ` John Prevost
2000-09-26 9:16 ` Xavier Leroy
2000-09-30 9:12 ` Julian Assange
2000-09-30 14:25 ` Pierre Weis
2000-09-30 15:19 ` Markus Mottl
2000-09-30 14:28 ` Stefan Monnier
2000-10-02 13:11 ` Patrick M Doane
2000-10-02 16:28 ` Markus Mottl [this message]
2000-10-05 18:39 ` Pierre Weis
2000-09-25 19:56 Damien Doligez
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