From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.devel Subject: Re: A few thoughts on seq.el Date: Tue, 02 Aug 2016 00:08:32 +0200 Message-ID: <87shuo16sf.fsf@web.de> References: <87eg68oow7.fsf@petton.fr> <87ziow17cn.fsf@web.de> NNTP-Posting-Host: blaine Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1470089359 31419 195.159.176.226 (1 Aug 2016 22:09:19 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 1 Aug 2016 22:09:19 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) To: Emacs Development Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Aug 02 00:09:14 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bULOb-0007p2-IB for ged-emacs-devel@m.gmane.org; Tue, 02 Aug 2016 00:09:13 +0200 Original-Received: from localhost ([::1]:53044 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bULOY-0002PD-3I for ged-emacs-devel@m.gmane.org; Mon, 01 Aug 2016 18:09:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56513) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bULO3-0002P7-7Q for emacs-devel@gnu.org; Mon, 01 Aug 2016 18:08:39 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bULNy-0005gL-P5 for emacs-devel@gnu.org; Mon, 01 Aug 2016 18:08:38 -0400 Original-Received: from mout.web.de ([217.72.192.78]:54392) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bULNy-0005fr-EK for emacs-devel@gnu.org; Mon, 01 Aug 2016 18:08:34 -0400 Original-Received: from drachen.dragon ([88.67.73.210]) by smtp.web.de (mrweb103) with ESMTPSA (Nemesis) id 0LyUkU-1bFLZH0MRK-015uCN; Tue, 02 Aug 2016 00:08:33 +0200 Cancel-Lock: sha1:261spkSwKJxqjlDjb4CDjjF4+Es= In-Reply-To: <87ziow17cn.fsf@web.de> (Michael Heerdegen's message of "Mon, 01 Aug 2016 23:56:24 +0200") X-Provags-ID: V03:K0:QyUPZZej4RDLrnVD7d5vSRhcJaGaMyrL+txo8laqSs4Y6tbDOXC FmVY6RknnzNWb19/QAMwElEhTxTU9L80LwLROyaYOCR2cEtUeFQVBsf0xXsPq485hE4Ktef hzhrWTqIoRfKLDkk+xqxHL+fyuGtvpDF6p8BWoi95qYPge94XWRMXuoIikr40sMhfcZinkL jiWdpSjAL8VmoHUCifdkw== X-UI-Out-Filterresults: notjunk:1;V01:K0:kalnBsVSptg=:yQJBjYnHgo3qjrqRn93qUm L6jov0Ci1+xYu/IQ1NRE+9wg2p4775mZnKZWqK41SuFm/LxC1xkqRpKsPyRGQyWc5kkb7SCJQ vzfoXo9pGI3T3m4kT+9e2J7U25DSZ7O24y6Z/wBrfg8qH63/iI9Ax/a8Ru1ho5SmJKxZRzqAN 8qO4VNFXlbvf0jPU8sAYvZvFbyeAbWFyZA/0qBj+QFZfrQKmvO9ZEdbqFyR10YxnSxcPB+Zda lrDNx+Eu7aM73rU7Q2W7HphwRsGUHWSqbFvNz9x1R8MQsDPJ1sBdPocXBlo1ymD9T19zpPFaz m9wdGRGZGBQQdbiFnAHdGRM/fAr7RHs9MCYDImiAQRMI7FVC/fIuIhAH+XdwlreSJHzlyQaxS FzkMq7EjnuBUVFhg6UnH+WhzAlq+4bmG174RJniWGYe8oK0pVAXZ1sOCfbejTVSqjHe9P9QpO nJSg0Kjb/e9xYhKNkHhxJ1CecpC+PJplkEQY7ZnD/2rbGxmyQKQTF32JlCO+58a5OqRdp55Fs r6vleoskGWoypY+jv/z3YH1PFrqjp70aZcVGaHVrQ2x6fo+hzwBHkGCNk4rqZ+EMy3Sdr16bD gmpgyfeYN0Cq0eZakEoslrvuCxZNXLafdbWEt9aLPVjnrVdlj9aV3RSteajNsvOviRHgtutjd WR3npXnv330em4+W8Q5S0neq1th+WXTcmE4sRuAacmEQ/63Xi4oyWW7DBB9Qsf32Oo7tG4hAH d/6zi9HRsGkNfUkJYWbsoPNxi5MOy0/xu/R44hOiQkY+RNMh7pUXmRbczWmwUennfsBIyn+f X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 217.72.192.78 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:206333 Archived-At: Michael Heerdegen writes: > list L has, say, 100000 elements, > > (cl-subseq l 1 3) > > will be very slow because it always calculates the length of the first > argument L. Eh, no, that must have been another function, or it has been fixed. What I said is not correct, the function calculates the list length only when necessary (negative indexes). Michael.