caml-list - the Caml user's mailing list
 help / color / mirror / Atom feed
From: Alessandro Baretta <alex@baretta.com>
To: Ocaml <caml-list@inria.fr>
Subject: [Caml-list] On the equality of functional values
Date: Sun, 27 Oct 2002 15:10:59 +0100	[thread overview]
Message-ID: <3DBBF3F3.8080600@baretta.com> (raw)

I have been experimenting with equal signs, and I noticed 
that the equality operator (=) behaves in a strange way with 
respect to functional values.

         Objective Caml version 3.06

# (=) = (=) ;;
Exception: Invalid_argument "equal: functional value".
# let x = (=) in x = x ;;
- : bool = true

The first line seems to imply that no comparisons are 
possible between functional values. However, the second line 
I typed does not raise the same exception. This seems to 
imply that comparisons are allowed between functional 
values, too.

Now, which of two hypotheses is correct?

Alex

-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners


             reply	other threads:[~2002-10-27 14:11 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-27 14:10 Alessandro Baretta [this message]
2002-10-27 15:34 ` David Brown
2002-10-27 17:58 ` David Monniaux
2002-10-28  6:15   ` Alessandro Baretta
2002-10-28  8:34     ` jeanmarc.eber
2002-10-29 10:32     ` Pierre Weis
2002-10-27 18:02 ` Remi VANICAT

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=3DBBF3F3.8080600@baretta.com \
    --to=alex@baretta.com \
    --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;
as well as URLs for NNTP newsgroup(s).