From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Thorsten Jolitz Newsgroups: gmane.emacs.help Subject: Hash tables - how to look up values? Date: Wed, 04 Jul 2012 15:48:09 +0200 Message-ID: <873957d4di.fsf@googlemail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1341409566 11671 80.91.229.3 (4 Jul 2012 13:46:06 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 4 Jul 2012 13:46:06 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Jul 04 15:46:06 2012 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 1SmPu7-0006tn-ED for geh-help-gnu-emacs@m.gmane.org; Wed, 04 Jul 2012 15:46:03 +0200 Original-Received: from localhost ([::1]:42427 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SmPu6-0006Pp-EI for geh-help-gnu-emacs@m.gmane.org; Wed, 04 Jul 2012 09:46:02 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:45789) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SmPtq-00061p-5I for help-gnu-emacs@gnu.org; Wed, 04 Jul 2012 09:45:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SmPtl-0002uw-BS for help-gnu-emacs@gnu.org; Wed, 04 Jul 2012 09:45:45 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:57439) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SmPtl-0002sx-2x for help-gnu-emacs@gnu.org; Wed, 04 Jul 2012 09:45:41 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1SmPth-0006AU-UJ for help-gnu-emacs@gnu.org; Wed, 04 Jul 2012 15:45:37 +0200 Original-Received: from e178191004.adsl.alicedsl.de ([85.178.191.4]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 04 Jul 2012 15:45:37 +0200 Original-Received: from tjolitz by e178191004.adsl.alicedsl.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 04 Jul 2012 15:45:37 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 23 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: e178191004.adsl.alicedsl.de User-Agent: Gnus/5.130002 (Ma Gnus v0.2) Emacs/24.0.93 (gnu/linux) Cancel-Lock: sha1:1G34Il1Al7iHz+7QWRG/N5Vy9Ls= 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:85651 Archived-At: Hi List, I would need a function that does the opposite of ,-------------------- | (gethash key table) `-------------------- i.e. something like ,------------------- | (getkey val table) `------------------- that returns the corresponding key of a known (string) value in a hash table (similar to 'rassoc' for alists). I could not find such a function - does it exist already? -- cheers, Thorsten