From: Alain Frisch <alain@frisch.fr>
To: Christophe Troestler <Christophe.Troestler@umons.ac.be>,
OCaml Mailing List <caml-list@inria.fr>
Subject: Re: [Caml-list] First class modules from C
Date: Sat, 15 Feb 2014 16:05:52 +0100 [thread overview]
Message-ID: <52FF8250.30607@frisch.fr> (raw)
In-Reply-To: <20140215.152342.1020588167010524975.Christophe.Troestler@umons.ac.be>
On 2/15/2014 3:23 PM, Christophe Troestler wrote:
> When passing a packed module to a C function, do we access its values
> as if it was a record (in the order of the signature) or is it more
> complicated? A description in the user manual would be nice!
Yes, currently, this is how a first-class module is represented, and you
need to know exactly what in the signature count for one slot. But this
representation is not specified, and not guaranteed to remain like that
in future versions (in particular, it might very well be the case that
first-class modules would receive an extra unique identifier field, to
be used by the generic hash/compare functions). It seems more robust to
access components from an OCaml function (called from C, if needed, or
applied before/instead passing the packed module to C).
-- Alain
prev parent reply other threads:[~2014-02-15 15:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-14 7:23 [Caml-list] First class modules aliases Christophe Troestler
2014-02-14 8:57 ` Alain Frisch
2014-02-14 9:08 ` Jacques Garrigue
2014-02-14 9:22 ` Alain Frisch
2014-02-14 23:23 ` Jacques Garrigue
2014-02-14 9:39 ` Alain Frisch
[not found] ` <20140215.152342.1020588167010524975.Christophe.Troestler@umons.ac.be>
2014-02-15 15:05 ` Alain Frisch [this message]
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