From: "Harrison, John R" <john.r.harrison@intel.com>
To: "Christopher Kauffman" <kauffman@cs.umn.edu>
Cc: "OCaml" <caml-list@yquem.inria.fr>
Subject: RE: [Caml-list] Question on polymorphic typing for curried functions
Date: Fri, 24 Aug 2007 16:32:42 -0700 [thread overview]
Message-ID: <509223F0BF55E74FA1247D17207E7A0C01CE4E65@orsmsx419.amr.corp.intel.com> (raw)
In-Reply-To: <46CF34DE.301@cs.umn.edu>
Hi Chris,
| I am looking for a bit of information on the behavior of
| curried functions wrt polymorphic arguments. For instance, in
| the following example, using a curried function seems to lose
| the nice polymorphism that I desire.
OCaml uses a variant of the so-called "value restriction" to ensure
soundness in the way polymorphism and imperative features interact.
You can find more information in this paper by Jacques Garrigue:
http://www.math.nagoya-u.ac.jp/~garrigue/papers/morepoly-long.pdf
It can sometimes be annoying and unintuitive (for me anyway) to lose
polymorphism by eta contraction. But this approach is at least
relatively simple and well-understood.
John.
prev parent reply other threads:[~2007-08-24 23:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-24 19:43 Christopher Kauffman
2007-08-24 20:25 ` [Caml-list] " Jon Harrop
2007-08-24 21:04 ` Julien Moutinho
2007-08-24 23:32 ` Harrison, John R [this message]
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