Mailing list for all users of the OCaml language and system.
 help / color / mirror / Atom feed
From: Christophe Raffalli <christophe@raffalli.eu>
To: "caml-list@inria.fr" <caml-list@inria.fr>
Subject: [Caml-list] problem with generalisation
Date: Sat, 23 Sep 2017 19:47:07 +0200	[thread overview]
Message-ID: <20170923174705.wkdryyzkixlroqdw@delli7.univ-savoie.fr> (raw)

[-- Attachment #1: Type: text/plain, Size: 522 bytes --]

Hello,

I am blocked by this case not working (I reported on Mantis ...
https://caml.inria.fr/mantis/view.php?id=7636)

Any hint on how to make it works, apart fomr Obj.magic ?

I can not change the types, they come from a functor.

====================================================
type ('a, 'b) elt = 'a

type 'a iter = { f : 'b.('a, 'b) elt -> unit }

let promote f : 'a -> unit =
  let f : 'b.('a, 'b) elt -> unit = fun x -> f x in
    { f }
====================================================

Cheers,
Christophe

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

             reply	other threads:[~2017-09-23 17:47 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-23 17:47 Christophe Raffalli [this message]
2017-09-23 20:40 ` Damien Guichard
2017-09-23 21:04 ` Markus Mottl

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20170923174705.wkdryyzkixlroqdw@delli7.univ-savoie.fr \
    --to=christophe@raffalli.eu \
    --cc=caml-list@inria.fr \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox