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 PAA26488; Fri, 12 Jul 2002 15:21:26 +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 PAA26212 for ; Fri, 12 Jul 2002 15:21:25 +0200 (MET DST) Received: from sunny.pacific.net.au (sunny.pacific.net.au [203.25.148.40]) by nez-perce.inria.fr (8.11.1/8.11.1) with ESMTP id g6CDLNj28024 for ; Fri, 12 Jul 2002 15:21:23 +0200 (MET DST) Received: from wisma.pacific.net.au (wisma.pacific.net.au [210.23.129.72]) by sunny.pacific.net.au with ESMTP id g6CDLLSs024724; Fri, 12 Jul 2002 23:21:21 +1000 (EST) Received: from ozemail.com.au (ppp115.dyn1.pacific.net.au [61.8.1.115]) by wisma.pacific.net.au with ESMTP id XAA18132; Fri, 12 Jul 2002 23:21:19 +1000 (EST) Message-ID: <3D2ED7CF.8090509@ozemail.com.au> Date: Fri, 12 Jul 2002 23:21:19 +1000 From: John Max Skaller User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.2.1) Gecko/20010901 X-Accept-Language: en-us MIME-Version: 1.0 To: Brian Smith CC: OCaml Mailing list Subject: Re: [Caml-list] Syntax for multiple subtyping constraints? References: <3D2E6A3F.70001@uiowa.edu> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk Brian Smith wrote: > In other words, how can I assert that (some_z : z :> x) and (some_z : > z :> y) will always be valid? Well, you can just encode the conversion in a function: let x_of_z (some_z : z):x = (some_z:z::>x) -- John Max Skaller, mailto:skaller@ozemail.com.au snail:10/1 Toxteth Rd, Glebe, NSW 2037, Australia. voice:61-2-9660-0850 ------------------- 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