From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?ISO-8859-1?Q?Nordl=F6w?= Newsgroups: gmane.emacs.help Subject: Hash-tables containing references to hash-tables Date: Mon, 23 Nov 2009 03:12:22 -0800 (PST) Organization: http://groups.google.com Message-ID: <7a116be4-52cb-482d-b555-09bc4950d5f7@31g2000vbf.googlegroups.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1258976761 23390 80.91.229.12 (23 Nov 2009 11:46:01 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 23 Nov 2009 11:46:01 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Nov 23 12:45:54 2009 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1NCXMV-0002Sh-NU for geh-help-gnu-emacs@m.gmane.org; Mon, 23 Nov 2009 12:45:43 +0100 Original-Received: from localhost ([127.0.0.1]:49165 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NCXMV-0008Hw-BI for geh-help-gnu-emacs@m.gmane.org; Mon, 23 Nov 2009 06:45:43 -0500 Original-Path: news.stanford.edu!usenet.stanford.edu!postnews.google.com!31g2000vbf.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 16 Original-NNTP-Posting-Host: 150.227.15.253 Original-X-Trace: posting.google.com 1258974742 5654 127.0.0.1 (23 Nov 2009 11:12:22 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Mon, 23 Nov 2009 11:12:22 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: 31g2000vbf.googlegroups.com; posting-host=150.227.15.253; posting-account=ytJKAgoAAAA1tg4ScoRszebXiIldA5vg User-Agent: G2/1.0 X-HTTP-Via: 1.1 ip1-w.foi.se:8080 (IronPort-WSA/6.3.0-604) X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.0.256.0 Safari/532.5,gzip(gfe),gzip(gfe) Original-Xref: news.stanford.edu gnu.emacs.help:174975 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:70046 Archived-At: Is it possible for a hash-table to contain a *reference* to another hash-table, similar to how we can build arbitrary graphs using conses/ lists and setf? If so how? If not, is there reason for being so or is it just an emacs todo? If we have (puthash parent-key (make-hash-table : size CHILD-SIZE) parent-hash) then I want (gethash parent-key parent-hash) to return a *reference* to hash-table contained in parent-hash. I already have a working code for this but I am uncertain how this will perform when CHILD-SIZE is really large. /Nordl=F6w