From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: caml-list@yquem.inria.fr 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 F06A7BB9C for ; Fri, 25 Nov 2005 06:31:44 +0100 (CET) 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 jAP5ViZH004558 for ; Fri, 25 Nov 2005 06:31:44 +0100 Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id GAA04965 for ; Fri, 25 Nov 2005 06:31:44 +0100 (MET) Received: from kurims.kurims.kyoto-u.ac.jp (kurims.kurims.kyoto-u.ac.jp [130.54.16.1]) by concorde.inria.fr (8.13.0/8.13.0) with ESMTP id jAP5Vgkx004555 for ; Fri, 25 Nov 2005 06:31:43 +0100 Received: from localhost (orion [130.54.16.5]) by kurims.kurims.kyoto-u.ac.jp (8.13.1/8.13.1) with ESMTP id jAP5Ve2T021353 for ; Fri, 25 Nov 2005 14:31:41 +0900 (JST) Date: Fri, 25 Nov 2005 14:31:40 +0900 (JST) Message-Id: <20051125.143140.50050315.keiko@kurims.kyoto-u.ac.jp> To: caml-list@inria.fr Subject: Re: [Caml-list] pattern match on class? From: Keiko Nakata X-Mailer: Mew version 4.2 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 4386A1C0.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Miltered: at concorde with ID 4386A1BE.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Spam: no; 0.00; caml-list:01 run-time:01 sourceforge:01 match:02 match:02 objects:02 pattern:03 pattern:03 correctly:04 object:09 object:09 instance:09 instance:09 kyoto-u:10 might:10 X-Spam-Checker-Version: SpamAssassin 3.0.3 (2005-04-27) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled version=3.0.3 From: skaller >We have anonymous objects now .. but can one pattern >match on a class as one can on a record? I might not understand you correctly, but I think it is impossible if you want something like "instance of" in Java. Because the run-time does not carry type information of values, it has no way to know the exact type of an object, nor whether an object is an instance of a particular class. Keiko NAKATA