From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.help Subject: RE: What does "lacks a prefix" mean? Date: Fri, 10 Jul 2015 07:53:43 -0700 (PDT) Message-ID: <726ba455-8671-4106-9cd3-a615a75284a0@default> References: <<1e0ad02f-ca3e-495c-bb85-61f77090d31d@googlegroups.com> <87bnfmqzn2.fsf@kuiper.lan.informatimago.com> <87io9ui67a.fsf@nl106-137-147.student.uu.se> > <> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1436540062 21917 80.91.229.3 (10 Jul 2015 14:54:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 10 Jul 2015 14:54:22 +0000 (UTC) To: Barry Margolin , help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Jul 10 16:54:12 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZDZgp-0000hw-Sy for geh-help-gnu-emacs@m.gmane.org; Fri, 10 Jul 2015 16:54:12 +0200 Original-Received: from localhost ([::1]:44938 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZDZgo-0003IP-VA for geh-help-gnu-emacs@m.gmane.org; Fri, 10 Jul 2015 10:54:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51740) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZDZgX-0003HL-1l for help-gnu-emacs@gnu.org; Fri, 10 Jul 2015 10:53:53 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZDZgQ-0006zE-Kk for help-gnu-emacs@gnu.org; Fri, 10 Jul 2015 10:53:52 -0400 Original-Received: from aserp1040.oracle.com ([141.146.126.69]:48101) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZDZgQ-0006xt-ER for help-gnu-emacs@gnu.org; Fri, 10 Jul 2015 10:53:46 -0400 Original-Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t6AEri46006150 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 10 Jul 2015 14:53:44 GMT Original-Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t6AEriaC024158 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Fri, 10 Jul 2015 14:53:44 GMT Original-Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t6AErh1b002383; Fri, 10 Jul 2015 14:53:44 GMT In-Reply-To: <> X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.9 (901082) [OL 12.0.6691.5000 (x86)] X-Source-IP: aserv0022.oracle.com [141.146.126.234] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 141.146.126.69 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:105580 Archived-At: > [Common Lisp] specifies that the bindings are done in parallel, but > evaluation of the initialization forms is sequential. From > http://www.lispworks.com/documentation/HyperSpec/Body/s_let_l.htm#let >=20 > "LET ... first evaluates the expressions init-form-1, init-form-2, > and so on, in that order, saving the resulting values. Then all of > the variables varj are bound to the corresponding values" Good clarification. > If the forms have no side effects, LET can indeed execute them in > parallel, since there's no way to tell the difference. LET* can also > do that for any initialization expressions that don't refer back to > earlier variables and have no side effects. Also well put.