From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Leo Liu Newsgroups: gmane.emacs.devel Subject: Re: why is reverse a string in-place so much slower than a vector? Date: Sat, 26 Apr 2014 08:19:09 +0800 Message-ID: References: <87zjj9n53w.fsf@igel.home> <87vbtxn06r.fsf@igel.home> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1398471584 15382 80.91.229.3 (26 Apr 2014 00:19:44 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 26 Apr 2014 00:19:44 +0000 (UTC) Cc: emacs-devel@gnu.org To: Andreas Schwab Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Apr 26 02:19:37 2014 Return-path: Envelope-to: ged-emacs-devel@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 1WdqLB-0001Pe-01 for ged-emacs-devel@m.gmane.org; Sat, 26 Apr 2014 02:19:37 +0200 Original-Received: from localhost ([::1]:60494 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WdqLA-0000aw-DS for ged-emacs-devel@m.gmane.org; Fri, 25 Apr 2014 20:19:36 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:58663) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WdqKz-0000Hk-1R for emacs-devel@gnu.org; Fri, 25 Apr 2014 20:19:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WdqKp-0003PG-Pj for emacs-devel@gnu.org; Fri, 25 Apr 2014 20:19:24 -0400 Original-Received: from mail-pb0-x229.google.com ([2607:f8b0:400e:c01::229]:59389) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WdqKp-0003OX-H9 for emacs-devel@gnu.org; Fri, 25 Apr 2014 20:19:15 -0400 Original-Received: by mail-pb0-f41.google.com with SMTP id rr13so3763619pbb.0 for ; Fri, 25 Apr 2014 17:19:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:references:face:date:in-reply-to:message-id :user-agent:mime-version:content-type; bh=CRGHa+yWIB+/otc0f3gF9MTJjVXd8WiDE5D/w8X3vB8=; b=YM1cuC3PgMJCFRNcweFTINcA7YTLftf1CEo8fwZUFr1JpAlIHQWEKH7me87vJgo04H zJ4BzQtQyVP813tn/T76ZpINGYy88pdmzZH5A6xQTN7163BQf+7BDVIw0wBa57gvUM9j tpjyAYnyiqUiigmUAAQd27npEUdOs1Q/EM2dyN005eHIBsSShwRJshcVECb987/xW+05 E9bNGK/7KJsv/dxEkEiRDNIgXjvWVXPMbBkhD0MCWvIk+cJLvFQSdOnka63luSbGmkjt r9fPQi230WQux2qnvx55wDd7Zxq4yKa+zbfi8k0saJJLZOaAnrlHQVN1Zu3RV2wcR4Bp jNqA== X-Received: by 10.67.13.134 with SMTP id ey6mr11087263pad.44.1398471554044; Fri, 25 Apr 2014 17:19:14 -0700 (PDT) Original-Received: from fortuna ([123.115.255.237]) by mx.google.com with ESMTPSA id ci4sm18613248pbb.50.2014.04.25.17.19.11 for (version=TLSv1.1 cipher=RC4-SHA bits=128/128); Fri, 25 Apr 2014 17:19:13 -0700 (PDT) Face: iVBORw0KGgoAAAANSUhEUgAAACgAAAAoBAMAAAB+0KVeAAAAElBMVEUAAAAAAP+LRRP0pGC+ vr7///+7mT1iAAAAAWJLR0QAiAUdSAAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB9cBBwMO DhglKe4AAAEsSURBVCjPbZNBboQwDEV/Cd4X9QJRThApmn0XYW+Jyf2v0m+HhqDBgiAe9rcTG7QH w/1Vn2Ar8gBb/ocywSN3qK9T3z4eFDB4eApocBpeBs1RSykoJd8gQcm8pGmHXFso3ajnmsqV0TnY DQkOfXUfN5NwaI7AWTVOyEhcu1aHmdWItHddUVUcUgUBCkitu8V6ditHVOVdqzl2EQ1ZVGTbdK0V 7cqn8vWzoU5Q/bF9Y/Y0cRU1xwkys5dJ+Dt6pBDWifcNQml8Gh2JVmPSoQzo7en0grswkxrUGYJ7 0hSxxAGr7ZMwYcHIzprpi7TENEE1xtiYxixRlCfPBsUUrwHD7uGIwATrbnODJcVrPpVn3hxiGloe m/S+z3CtuzUSMo83N4DPH+F0evwR3P4A2k+75838OKQAAAAASUVORK5CYII= In-Reply-To: <87vbtxn06r.fsf@igel.home> (Andreas Schwab's message of "Fri, 25 Apr 2014 13:00:28 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (CentOS 6.5) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2607:f8b0:400e:c01::229 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:171631 Archived-At: On 2014-04-25 13:00 +0200, Andreas Schwab wrote: > No, it is all due to the variable length nature of the UTF-8 encoding. Make sense and thanks again. Leo