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 QAA02315; Wed, 6 Aug 2003 16:51:56 +0200 (MET DST) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f 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 QAA20737 for ; Wed, 6 Aug 2003 16:51:54 +0200 (MET DST) Received: from opus.davidb.org (66-75-152-1.san.rr.com [66.75.152.1]) by concorde.inria.fr (8.11.1/8.11.1) with ESMTP id h76Eprf10144 for ; Wed, 6 Aug 2003 16:51:53 +0200 (MET DST) Received: from davidb by opus.davidb.org with local (Exim 3.31 #1 (Debian)) id 19kPdk-0007c6-00; Wed, 06 Aug 2003 07:51:48 -0700 Date: Wed, 6 Aug 2003 07:51:48 -0700 From: David Brown To: Richard Jones Cc: Vovka , caml-list@inria.fr Subject: Re: [Caml-list] static class member.... Message-ID: <20030806145148.GA29231@davidb.org> References: <000201c35c17$2cefc4a0$0300a8c0@James> <200308061657.26300.jove@newmail.ru> <20030806144523.GA29653@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030806144523.GA29653@redhat.com> User-Agent: Mutt/1.5.4i X-Loop: caml-list@inria.fr X-Spam: no; 0.00; caml-list:01 0400,:01 newbie:01 foo:01 separates:01 ocaml:01 06,:02 modules:02 objects:02 module:03 dave:03 wrote:03 let:04 namespace:04 aug:05 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk On Wed, Aug 06, 2003 at 03:45:23PM +0100, Richard Jones wrote: > On Wed, Aug 06, 2003 at 04:57:26PM +0400, Vovka wrote: > > Hi!!!! > > > > Could you help me please. I'm newbie in ocaml programming, i used to write > > programmes in C++ , so I've faced difficulties in introducing static > > class member(==a common member for all objects of the same class). Can i > > handle it in ocaml? Thanks a lot. > > This is one way to do it, there might be other easier ways: > > class foo = > let counter = ref 0 in But this counter will be unique for each new instance of the class. What they are really asking for is something like let counter = ref 0 class foo = ... counter ... There is only one counter, globally. Remember, Ocaml separates the namespace management (modules) from the class system. It is easy to hide "counter" with the module spec. Dave ------------------- 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