From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: [elpa] externals/emms e9fa4c095d: * emms.el: reverse the order players are collected Date: Wed, 07 Sep 2022 16:26:56 -0400 Message-ID: References: <166250171605.12534.6807904164286037648@vcs2.savannah.gnu.org> <20220906220156.5255DC0088A@vcs2.savannah.gnu.org> <87illzym7z.fsf@rabkins.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8379"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: Yoni Rabkin Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Sep 07 22:28:16 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oW1eh-00021Z-Hi for ged-emacs-devel@m.gmane-mx.org; Wed, 07 Sep 2022 22:28:15 +0200 Original-Received: from localhost ([::1]:38728 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oW1eg-0004CT-95 for ged-emacs-devel@m.gmane-mx.org; Wed, 07 Sep 2022 16:28:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41024) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oW1db-0003Qf-0A for emacs-devel@gnu.org; Wed, 07 Sep 2022 16:27:07 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:59283) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oW1dU-0005jr-LO for emacs-devel@gnu.org; Wed, 07 Sep 2022 16:27:05 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 27AA2807A5; Wed, 7 Sep 2022 16:26:59 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 758E580506; Wed, 7 Sep 2022 16:26:57 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1662582417; bh=EFxnfu78Eqmeyd6vbnw3VNhqv593yb+BTfUeKIVB29Q=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=mINn8iWfNQxah3NnhNI5BsqKaiTBLkVovDxG4kzvfsSooR8vY+fwYmUVo+NvmkdXB hyx937pAmHPGdaCLm3rMBGOFoCX+o/+d24hajPgIlyvnmx+eJe+L4QoaIzOKSflJz6 9ViDBysqU+nyzXsE6fwh1hTarE7Xvc3IpDkuBGgqdqFmmnRojEZ9F5ZHeXgue9Mr61 r75yRHy6XWXJfDCmHE+qDTBe2UxhEaPzzJLfBldnwNUp66537A2SNaeWic8Iy7jC3O NKN8I4IM/hnHIe8boJWEmlhRhQ5Pnzas2YiBxtPvpyx+muSuJSISjmRpeZsahj2zlr cjYGR7TWrE8Qw== Original-Received: from pastel (unknown [157.52.9.190]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 3A5C812047F; Wed, 7 Sep 2022 16:26:57 -0400 (EDT) In-Reply-To: <87illzym7z.fsf@rabkins.net> (Yoni Rabkin's message of "Wed, 07 Sep 2022 16:16:00 -0400") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:294880 Archived-At: >> This changes the code's complexity from O(N) to O(N=B2) in the number of >> players. > > Is this because append has to traverse the list all of the way to the > last cdr every time? Yup. > * We've probably spent more time in this conversation than the sum total > processing time of all of the machines which will ever run this code. Indeed :-) Stefan