caml-list - the Caml user's mailing list
 help / color / mirror / Atom feed
From: Emmanuel.Chailloux@pps.jussieu.fr
To: caml-announce@inria.fr
Subject: [Caml-announce] coca-ml (downcast of objects)
Date: Mon, 24 Sep 2001 22:29:22 +0200	[thread overview]
Message-ID: <200109242026.f8OKQtc24770@foobar.pps.jussieu.fr> (raw)


[la version francaise suit]

   hello,

   I have made a small extension to ocaml 3-02 called coca-ml and using 
camlp4
   to allow "down cast" of objects between classes in relations of 
inheritence
   and sub-typing.

   This extension introduces two new syntatic constructions :

      expr instanceof c   : is used to test if an object "is-a" element 
of c
                                                         or a derived 
class of c
                                          and returns a boolean.

      cast expr from c1 to c2 : is used to cast an object to the type c2 :
                                 type of expr must be equal to c1
                                 c2 must be a sub-type of c1
                                 expr "is-a" c2

     There is a dynamic test to check if expr "is-a" c2. If not a 
exception
     is raised.

   coca-ml home page is :

    http://www.pps.jussieu.fr/~emmanuel/Public/Dev/coca-ml/index-en.html

   Please send the bug reports
               or your remarks to Emmanuel.Chailloux@pps.jussieu.fr

Emmanuel Chailloux...



[

   Salut,

   J'ai fait une petite extension d'ocaml 3-02 appelee coca-ml et 
utilisant
   camlp4 pour autoriser le "down cast" d'objets.


   Cette extension introduit deux nouvelles constructions syntaxiques :

      expr instanceof c   : est utilisee pour tester si un objet "est-un"
                            element de c ou d'une classe derivee de c,
                            et retourn un booleen.


      cast expr from c1 to c2 : est utilisee pour contraindre le type 
d'un objet
                                vers c2 :
                                 le type de expr doit etre zgal au type 
de c1
                                 c2 doit etre un sous-type de c1
                                 expr "est-un" c2

     Il y a un test dynamique pour verifier que expr "est-un" c2. Si ce 
n'est
     pas le cas une exception est declenchee.


  la page web de  coca-ml est :

    http://www.pps.jussieu.fr/~emmanuel/Public/Dev/coca-ml/index.html


   Veuillez envoyer vos rapports d'anomalies
                    ou vos remarques a' Emmanuel.Chailloux@pps.jussieu.fr


Emmanuel Chailloux...


                 reply	other threads:[~2001-09-25 16:01 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=200109242026.f8OKQtc24770@foobar.pps.jussieu.fr \
    --to=emmanuel.chailloux@pps.jussieu.fr \
    --cc=caml-announce@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;
as well as URLs for NNTP newsgroup(s).