From: luc.maranget@inria.fr (Luc Maranget)
To: Jacques Garrigue <garrigue@math.nagoya-u.ac.jp>
Cc: yminsky@cs.cornell.edu, yminsky@gmail.com, caml-list@inria.fr
Subject: Re: [Caml-list] When is a function polymorphic?
Date: Fri, 1 Apr 2005 18:26:04 +0200 [thread overview]
Message-ID: <20050401162604.GA24371@yquem.inria.fr> (raw)
In-Reply-To: <20050331.173223.128566586.garrigue@math.nagoya-u.ac.jp>
> From: Yaron Minsky <yminsky@gmail.com>
>
> > Interesting. I guess this is best understood as a limitation of the
> > type-checking algorithm. Does anyone know if there are any plans to
> > remove this limitation? Are there fundamental reasons why it would be
> > difficult to do so?
>
> This is not a limitation of the type checking algorithm per se.
> Rather, the type checking algorithm prefers not to use
> exhaustiveness information when this can be avoided, to keep it
> predictable.
> (Exhaustiveness is only used for polymorphic variants, but for
> a deeper reason.)
Besides, the test for exhautiveness much relies on typing having been
performed. (Except for variants, which undergo a preliminary, specific kind
of exhautiveness checking before typing).
--
Luc Maranget
prev parent reply other threads:[~2005-04-01 16:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-30 22:31 Yaron Minsky
2005-03-31 0:37 ` [Caml-list] " Jacques Garrigue
2005-03-31 0:51 ` Yaron Minsky
2005-03-31 1:15 ` Eric Cooper
2005-03-31 1:26 ` Martin Jambon
2005-03-31 2:42 ` Jacques Garrigue
2005-03-31 4:04 ` Yaron Minsky
2005-03-31 8:32 ` Jacques Garrigue
2005-03-31 12:04 ` Yaron Minsky
2005-03-31 12:48 ` Fermin Reig
2005-03-31 12:16 ` Jon Harrop
2005-04-01 16:26 ` Luc Maranget [this message]
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=20050401162604.GA24371@yquem.inria.fr \
--to=luc.maranget@inria.fr \
--cc=caml-list@inria.fr \
--cc=garrigue@math.nagoya-u.ac.jp \
--cc=yminsky@cs.cornell.edu \
--cc=yminsky@gmail.com \
/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).