From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.devel Subject: Re: Internationalize Emacs's messages (swahili) Date: Sun, 27 Dec 2020 01:34:51 +0100 Message-ID: <875z4o9jdg.fsf@gnus.org> References: <87o8ivumn5.fsf@telefonica.net> <83sg7xrgr5.fsf@gnu.org> <83h7odrdwy.fsf@gnu.org> <86sg7w39fh.fsf@163.com> <83pn30pku5.fsf@gnu.org> <86wnx8otoj.fsf@163.com> <834kkbp9vr.fsf@gnu.org> <87czyxuxw6.fsf@db48x.net> <87y2hlt82w.fsf@db48x.net> <87lfdlvsw4.fsf@logand.com> <83h7o8ncly.fsf@gnu.org> <87pn2wudab.fsf@db48x.net> <87mty0c3m1.fsf@gnus.org> <83czywnb86.fsf@gnu.org> <87im8ob707.fsf@gnus.org> <87eejcb6nx.fsf@gnus.org> <875z4ob5c9.fsf@gnus.org> <87a6u09nkq.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9277"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Eli Zaretskii , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Dec 27 01:35:57 2020 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 1ktK2N-00020g-Sp for ged-emacs-devel@m.gmane-mx.org; Sun, 27 Dec 2020 01:35:55 +0100 Original-Received: from localhost ([::1]:55644 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ktK2M-0002e9-SO for ged-emacs-devel@m.gmane-mx.org; Sat, 26 Dec 2020 19:35:54 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56446) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ktK1Z-00027Q-C8 for emacs-devel@gnu.org; Sat, 26 Dec 2020 19:35:05 -0500 Original-Received: from quimby.gnus.org ([2a01:4f9:2b:f0f::2]:44966) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ktK1X-0001mX-KM; Sat, 26 Dec 2020 19:35:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Gm6wf6OxYIBxhD41HLmvjTlcFjlNX60hvPCcpndjNVs=; b=JJ9V/Mz4oGomlG6EdIembPOHt1 2XdYy8KLoQvyTqNw8LLmD41peezLOXjIb9lCslncis3RneLL52rZxUZv7swETo6t0yP9mHNAe5gLG 1knj4nXNtGPsemQZ4BhEcuFFSOuXdfcpB0/oAU73Ujp3+qKtZG2BureBJCbTsfQzfPfI=; Original-Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ktK1M-0001UM-SM; Sun, 27 Dec 2020 01:34:59 +0100 Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAFVBMVEXu5ODBtayKf3Iv KBsKCQZZT0D///9OA1bqAAAAAWJLR0QGYWa4fQAAAAd0SU1FB+QMGwAfDbACvIgAAAG5SURBVDjL nZTPksIgDMbBWe8Et/eW2vta4AGUeF9Lef9X2RCgrTOeNv4dfn7Jl4RRiP8GqPyQAP/OsIU06uP5 yeHzI/hCxJ9P4Ergo+SqCB2rNNujEA5/j15q7QDigvf2a1B6Ll+7JwjpWhGjoXtVMLMBTgLSmGHU JeMwKiVWrg5aJwpdLVx7ISfOq42OKXkuLntxhUEMxc6gJ6OtLwK53sjAPq4yfpqfxpCo9zC8dd2l Xo5YYlFNwmQQ5wpwbsn4bUyugeNcFukwbOS5DVG6FbFfN0nfXJ2o8ENtRcooc3F5QXzRbN9zEVDf pOj26tu+8u58Ko2wh83Xil6ryOc2g1tbrcO5W7KrOaWItlanZ7CLWbRKUQnorMdXVZxCGnrTLt4U A6+LwBmt6VO7LnLNADKgDmyydRcSHB4AhuCNMSlNkdwp2EEOG8tnAA7uj899iraOZAfWehstlQo0 HpmHmy8gA+sdvbLmUVOdSiKSUFDnpCiAF+Hyjylu5OQuD4pQBFZFh/eaCkYGLLCAuwIu7LUAj3sN +M5gKiA7fEr6j2jgNsZ2njtXrcEAMVcnyDtXpfM13wUWvIE/JvCD9CjSHecAAAAldEVYdGRhdGU6 Y3JlYXRlADIwMjAtMTItMjdUMDA6MzE6MTMrMDA6MDC/6CTLAAAAJXRFWHRkYXRlOm1vZGlmeQAy MDIwLTEyLTI3VDAwOjMxOjEzKzAwOjAwzrWcdwAAAABJRU5ErkJggg== X-Now-Playing: Joni Mitchell's _Hejira_: "Refuge Of The Roads" In-Reply-To: <87a6u09nkq.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sun, 27 Dec 2020 00:04:05 +0100") Received-SPF: pass client-ip=2a01:4f9:2b:f0f::2; envelope-from=larsi@gnus.org; helo=quimby.gnus.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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:261876 Archived-At: Lars Ingebrigtsen writes: > I whipped one up quickly. With this totally realistic benchmark, this is what we have today: (let ((list (make-list 10000 nil))) (benchmark-run 1000000 (< (length list) 2))) => (10.826215101 0 0.0) The same, with length<: (let ((list (make-list 10000 nil))) (benchmark-run 1000000 (length< list 2))) => (0.05590014099999999 0 0.0) If we avoid tortoise/hare for small LENGTHs, then it's about 20% faster than that again (if we're doing (length< list 200)). diff --git a/src/fns.c b/src/fns.c index 646c3ed083..2557f41637 100644 --- a/src/fns.c +++ b/src/fns.c @@ -145,6 +145,37 @@ DEFUN ("safe-length", Fsafe_length, Ssafe_length, 1, 1, 0, return make_fixnum (len); } +DEFUN ("length<", Flength_less, Slength_less, 2, 2, 0, + doc: /* Return non-nil if SEQUENCE is shorter than LENGTH. +See `length' for allowed values of SEQUENCE. */) + (Lisp_Object sequence, Lisp_Object length) +{ + CHECK_FIXNUM (length); + EMACS_INT len = XFIXNUM (length); + + if (CONSP (sequence)) + { + EMACS_INT i = 0; + /* If LENGTH is short, use a fast loop that doesn't care about + whether SEQUENCE is circular or not. */ + if (len < 0xffff) + while (CONSP (sequence)) + { + if (++i >= len) + return Qnil; + sequence = XCDR (sequence); + } + /* Signal an error on circular lists. */ + else + FOR_EACH_TAIL (sequence) + if (++i >= len) + return Qnil; + return Qt; + } + else + return XFIXNUM (Flength (sequence)) < len? Qt: Qnil; +} + DEFUN ("proper-list-p", Fproper_list_p, Sproper_list_p, 1, 1, 0, doc: /* Return OBJECT's length if it is a proper list, nil otherwise. A proper list is neither circular nor dotted (i.e., its last cdr is nil). */ @@ -5721,6 +5752,7 @@ syms_of_fns (void) defsubr (&Srandom); defsubr (&Slength); defsubr (&Ssafe_length); + defsubr (&Slength_less); defsubr (&Sproper_list_p); defsubr (&Sstring_bytes); defsubr (&Sstring_distance); -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no