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 nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by yquem.inria.fr (Postfix) with ESMTP id 8107ABB81 for ; Mon, 26 Sep 2005 19:33:08 +0200 (CEST) Received: from pauillac.inria.fr (pauillac.inria.fr [128.93.11.35]) by nez-perce.inria.fr (8.13.0/8.13.0) with ESMTP id j8QHX7s8014162 for ; Mon, 26 Sep 2005 19:33:08 +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 TAA11646 for ; Mon, 26 Sep 2005 19:33:07 +0200 (MET DST) Received: from smtpauth04.mail.atl.earthlink.net (smtpauth04.mail.atl.earthlink.net [209.86.89.64]) by nez-perce.inria.fr (8.13.0/8.13.0) with ESMTP id j8QHX6ph014157 for ; Mon, 26 Sep 2005 19:33:07 +0200 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=mindspring.com; b=ZwKzAJh14L7wDrHvRwKkIXmPi7w76olGb9zOTWB+3yRr/lPwELXq2ZtSKsdSOr4X; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [71.32.45.13] (helo=dylan) by smtpauth04.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1EJwqf-0004b0-N9 for caml-list@inria.fr; Mon, 26 Sep 2005 13:33:06 -0400 Message-ID: <001d01c5c2c0$dd2647b0$0401000a@dylan> From: "David McClain" To: "caml" References: <20050926043240.24009.qmail@web26809.mail.ukl.yahoo.com> <43382A74.309@cs.pdx.edu> Subject: Re: Ant: [Caml-list] Efficiency of let/and Date: Mon, 26 Sep 2005 10:36:16 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1506 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 X-ELNK-Trace: 7a0ab3eafc8cf994b22988ad1c62733440683398e744b8a435c0834be8fdc8ee2307bf670605e2b02601a10902912494350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.32.45.13 X-j-chkmail-Score: MSGID : 433830D2.001 on nez-perce : j-chkmail score : X : 0/20 1 X-Miltered: at nez-perce with ID 433830D4.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Miltered: at nez-perce with ID 433830D2.001 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Spam: no; 0.00; caml-list:01 syntax:01 recursive:01 bindings:01 recursion:01 let:03 let:03 parallel:04 mutually:06 definition:07 efficiency:07 function:08 mcclain:09 mcclain:09 understood: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 I have understood that the "and" syntax was needed to support the creation of mutually recursive bindings. While it can also be used as a form of "parallel let" within a function definition, it is vitally important for the mutual recursion case. - David McClain, Tucson, AZ, USA