From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: How to count the number of occurrences of a character in a string? Date: Wed, 14 Oct 2015 00:00:03 +0200 Message-ID: <87twpua0po.fsf@debian.uxu> References: <874mhvq3b2.fsf@mbork.pl> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1444773167 18187 80.91.229.3 (13 Oct 2015 21:52:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 13 Oct 2015 21:52:47 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Oct 13 23:52:36 2015 Return-path: Envelope-to: geh-help-gnu-emacs@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 1Zm7Uq-0002Wg-8E for geh-help-gnu-emacs@m.gmane.org; Tue, 13 Oct 2015 23:52:36 +0200 Original-Received: from localhost ([::1]:39485 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zm7Up-00078P-Bx for geh-help-gnu-emacs@m.gmane.org; Tue, 13 Oct 2015 17:52:35 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35423) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zm7Tj-00075S-6p for help-gnu-emacs@gnu.org; Tue, 13 Oct 2015 17:51:28 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zm7Te-0001jw-53 for help-gnu-emacs@gnu.org; Tue, 13 Oct 2015 17:51:27 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:33794) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zm7Td-0001jY-UL for help-gnu-emacs@gnu.org; Tue, 13 Oct 2015 17:51:22 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Zm7TR-0000x6-5U for help-gnu-emacs@gnu.org; Tue, 13 Oct 2015 23:51:09 +0200 Original-Received: from nl106-137-244.student.uu.se ([130.243.137.244]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 13 Oct 2015 23:51:04 +0200 Original-Received: from embe8573 by nl106-137-244.student.uu.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 13 Oct 2015 23:51:04 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Original-Lines: 22 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: nl106-137-244.student.uu.se Mail-Copies-To: never User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Cancel-Lock: sha1:UmMatZfJnTS9TdJwytJKgbZqg+g= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:107627 Archived-At: Marcin Borkowski writes: > Should I ... use cl-count? Why not? (defun count-char-in-string (the-char str) (if (and (char-or-string-p the-char) (char-or-string-p str) ) (let ((c (if (characterp the-char) the-char (string-to-char the-char)))) (cl-count c (string-to-list str)) ) (error "Indata verification failed.") )) (count-char-in-string "o" "oooiiiooo") ; 6 (count-char-in-string ?\o "oooiiiooo") ; 6 (count-char-in-string 111 "oooiiiooo") ; 6 (count-char-in-string '(1) "oooiiiooo") ; error (count-char-in-string "o" '(1)) ; error -- underground experts united http://user.it.uu.se/~embe8573