From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Delivered-To: caml-list@yquem.inria.fr Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by yquem.inria.fr (Postfix) with ESMTP id F340BBC48 for ; Thu, 7 Apr 2005 00:38:47 +0200 (CEST) Received: from pauillac.inria.fr (pauillac.inria.fr [128.93.11.35]) by concorde.inria.fr (8.13.0/8.13.0) with ESMTP id j36Mcl4O010911 for ; Thu, 7 Apr 2005 00:38:47 +0200 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 AAA19898 for ; Thu, 7 Apr 2005 00:38:47 +0200 (MET DST) Received: from saul.cis.upenn.edu (SAUL.CIS.upenn.edu [158.130.12.4]) by nez-perce.inria.fr (8.13.0/8.13.0) with ESMTP id j36McjDq024808 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO) for ; Thu, 7 Apr 2005 00:38:46 +0200 Received: from localhost (SAUL.CIS.upenn.edu [158.130.12.4]) by saul.cis.upenn.edu (8.12.10/8.12.9) with ESMTP id j36MchCP017871; Wed, 6 Apr 2005 18:38:43 -0400 (EDT) Date: Wed, 06 Apr 2005 18:38:43 -0400 (EDT) Message-Id: <20050406.183843.133294794.eijiro_sumii@anet.ne.jp> To: caml-list@inria.fr Cc: sumii@saul.cis.upenn.edu Subject: Re: [Caml-list] ambitious proposal: polymorphic arithmetics From: Eijiro Sumii In-Reply-To: <87u0mjvafc.fsf@qrnik.zagroda> References: <20050406.151450.98562588.eijiro_sumii@anet.ne.jp> <20050406.163144.51837136.eijiro_sumii@anet.ne.jp> <87u0mjvafc.fsf@qrnik.zagroda> X-Mailer: Mew version 3.2 on Emacs 20.7 / Mule 4.1 (AOI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Miltered: at concorde with ID 425464F7.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Miltered: at nez-perce with ID 425464F5.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Spam: no; 0.00; caml-list:01 eijiro:01 sumii:01 eijiro:01 sumii:01 zsh:01 ocaml:01 ocaml:01 ...:98 polymorphic:01 polymorphic:01 segmentation:02 match:02 anet:02 fault:04 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on yquem.inria.fr X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled version=3.0.2 X-Spam-Level: From: "Marcin 'Qrczak' Kowalczyk" > # type t = A | B | C;; > type t = A | B | C > # match (Obj.magic (Obj.magic C + Obj.magic C)) with A -> 0 | B -> 1 | C -> 2;; > zsh: segmentation fault ocaml Good job!! It reproduced in all environments I have access to. Then, after all, "polymorphic addition" isn't actually as easy to implement in OCaml as I (rather naively) thought... Thanks so much to everybody for the very informative responses! Eijiro