From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: finding the hork point in ~/.emacs Date: Thu, 27 Aug 2020 04:18:27 +0200 Message-ID: <87imd4j0gc.fsf@ebih.ebihd> References: <877dtljfjk.fsf@ebih.ebihd> <9e70a795-6b9d-a5aa-e042-8c22d1685fa8@mousecar.com> <87bliwzzim.fsf@ericabrahamsen.net> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="33065"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:9Smr+9K3n5bYB6Dhf9tL3Knv+vI= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Aug 27 04:18:57 2020 Return-path: Envelope-to: geh-help-gnu-emacs@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 1kB7VA-0008Tf-H4 for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 27 Aug 2020 04:18:56 +0200 Original-Received: from localhost ([::1]:47148 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kB7V9-0001oh-JQ for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 26 Aug 2020 22:18:55 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58056) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kB7Us-0001oa-4a for help-gnu-emacs@gnu.org; Wed, 26 Aug 2020 22:18:38 -0400 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:47848 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kB7Uq-0003O5-K5 for help-gnu-emacs@gnu.org; Wed, 26 Aug 2020 22:18:37 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1kB7Um-00081o-DP for help-gnu-emacs@gnu.org; Thu, 27 Aug 2020 04:18:32 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/26 19:28:04 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:123789 Archived-At: Eric Abrahamsen wrote: > [...] it's definitely known as binary search, > because it's a more specific technique than just > commenting out random stuff and hoping. The Wikipedia article [1] seem to insist on a "sorted array". I didn't read the rest of it, tho, maybe they mention other areas and/or informal use of the word. It is a divide-and-conquer algorithm, right? [2] > No matter how big the file, it's relatively few > steps to find the problem. "Binary search runs in logarithmic time in the worst case", or O(log n) where n here would be the number of lines, I guess. [1] https://en.wikipedia.org/wiki/Binary_search_algorithm [2] https://en.wikipedia.org/wiki/Divide-and-conquer_algorithm -- underground experts united http://user.it.uu.se/~embe8573 https://dataswamp.org/~incal