From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id PAA07633; Thu, 30 Sep 2004 15:21:30 +0200 (MET DST) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id PAA07968 for ; Thu, 30 Sep 2004 15:21:29 +0200 (MET DST) Received: from smtp3.adl2.internode.on.net (smtp3.adl2.internode.on.net [203.16.214.203]) by nez-perce.inria.fr (8.13.0/8.13.0) with ESMTP id i8UDLQHI014806 for ; Thu, 30 Sep 2004 15:21:28 +0200 Received: from [192.168.1.200] (ppp202-133.lns1.syd3.internode.on.net [203.122.202.133]) by smtp3.adl2.internode.on.net (8.12.9/8.12.9) with ESMTP id i8UDLHOU061208; Thu, 30 Sep 2004 22:51:19 +0930 (CST) Subject: Re: [Caml-list] Factoring HOFs [was Re: C++ STL...] From: skaller Reply-To: skaller@users.sourceforge.net To: Keith Wansbrough Cc: Jon Harrop , caml-list In-Reply-To: References: Content-Type: text/plain Message-Id: <1096550477.12357.157.camel@pelican.wigram> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-4) Date: 30 Sep 2004 23:21:17 +1000 Content-Transfer-Encoding: 7bit X-Miltered: at nez-perce with ID 415C0856.002 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Loop: caml-list@inria.fr X-Spam: no; 0.00; caml-list:01 hofs:01 sourceforge:01 2004:99 quantifiers:01 annotations:01 coercions:01 9660:01 glebe:01 ocaml:01 variants:01 nsw:01 polymorphic:01 snail:02 checkout:02 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk On Thu, 2004-09-30 at 20:13, Keith Wansbrough wrote: > but OCaml doesn't allow nested quantifiers (i.e., higher-rank > polymorphism). > > It actually wouldn't be very hard to support, if you're prepared to > accept the need for the occasional type annotation I doubt there is a problem with that. I use polymorphic variants and occasionally you need not just annotations, but to actually write full coercions. This is a small price to pay. -- John Skaller, mailto:skaller@users.sf.net voice: 061-2-9660-0850, snail: PO BOX 401 Glebe NSW 2037 Australia Checkout the Felix programming language http://felix.sf.net ------------------- 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