Mailing list for all users of the OCaml language and system.
 help / color / mirror / Atom feed
From: "Christoph Höger" <christoph.hoeger@tu-berlin.de>
To: caml users <caml-list@inria.fr>
Subject: [Caml-list] Constraint Inference of a poly-type variable in a class-method
Date: Tue, 1 Dec 2015 10:31:54 +0100	[thread overview]
Message-ID: <565D690A.7000005@tu-berlin.de> (raw)

Dear all,

As a way to work-around my latest scalability issues, I want to attach a
polymorphic method to a class with this functionality:

let f t = t#s
val f : < s : 'a; .. > -> 'a

I know I can write:

object method f = f end ;;

and

class x = object method f : 'a 'b . (<s : 'a; ..> as 'b) -> 'a = f end ;;

However, the constraint might be somewhat larger, so I want it to be
inferred. Is there a way to have the compiler infer a constraint on a
poly-type variable?

regards,

Christoph


-- 
Christoph Höger

Technische Universität Berlin
Fakultät IV - Elektrotechnik und Informatik
Übersetzerbau und Programmiersprachen

Sekr. TEL12-2, Ernst-Reuter-Platz 7, 10587 Berlin

Tel.: +49 (30) 314-24890
E-Mail: christoph.hoeger@tu-berlin.de
	

             reply	other threads:[~2015-12-01  9:31 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-01  9:31 Christoph Höger [this message]
2015-12-01  9:42 ` Jacques Garrigue

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=565D690A.7000005@tu-berlin.de \
    --to=christoph.hoeger@tu-berlin.de \
    --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