From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/40702 Path: main.gmane.org!not-for-mail From: Ted Zlatanov Newsgroups: gmane.emacs.gnus.general Subject: Re: possible strange idea about hierarchical lists Date: Tue, 04 Dec 2001 12:38:41 -0500 Organization: Cienfuegos Sender: owner-ding@hpc.uh.edu Message-ID: References: NNTP-Posting-Host: coloc-standby.netfonds.no Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1035176212 2334 80.91.224.250 (21 Oct 2002 04:56:52 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 21 Oct 2002 04:56:52 +0000 (UTC) Return-Path: Original-Received: (qmail 12412 invoked from network); 4 Dec 2001 17:48:15 -0000 Original-Received: from malifon.math.uh.edu (mail@129.7.128.13) by mastaler.com with SMTP; 4 Dec 2001 17:48:15 -0000 Original-Received: from sina.hpc.uh.edu ([129.7.128.10] ident=lists) by malifon.math.uh.edu with esmtp (Exim 3.20 #1) id 16BJfp-0007r3-00; Tue, 04 Dec 2001 11:48:05 -0600 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Tue, 04 Dec 2001 11:47:52 -0600 (CST) Original-Received: from sclp3.sclp.com (qmailr@sclp3.sclp.com [209.196.61.66]) by sina.hpc.uh.edu (8.9.3/8.9.3) with SMTP id LAA29787 for ; Tue, 4 Dec 2001 11:47:40 -0600 (CST) Original-Received: (qmail 12405 invoked by alias); 4 Dec 2001 17:47:49 -0000 Original-Received: (qmail 12400 invoked from network); 4 Dec 2001 17:47:49 -0000 Original-Received: from tantalum.northernlight.com (HELO bronze.nimbus.northernlight.com) (205.181.75.60) by gnus.org with SMTP; 4 Dec 2001 17:47:49 -0000 Original-Received: from onyx.nimbus.northernlight.com (onyx.nimbus.northernlight.com [10.0.3.57]) by bronze.nimbus.northernlight.com (8.10.0/8.10.0) with ESMTP id fB4HlWu03881 for ; Tue, 4 Dec 2001 12:47:32 -0500 (EST) Original-To: ding@gnus.org X-Face: bd.DQ~'29fIs`T_%O%C\g%6jW)yi[zuz6;d4V0`@y-~$#3P_Ng{@m+e4o<4P'#(_GJQ%TT= D}[Ep*b!\e,fBZ'j_+#"Ps?s2!4H2-Y"sx" Mail-Followup-To: ding@gnus.org In-Reply-To: (prj@po.cwru.edu's message of "Tue, 04 Dec 2001 12:44:18 -0500") Original-Lines: 24 User-Agent: Gnus/5.090004 (Oort Gnus v0.04) Emacs/21.1 (i386-redhat-linux-gnu) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:40702 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:40702 prj@po.cwru.edu (Paul Jarc) writes: > Ted Zlatanov wrote: >> Parsing of the hierarchy specification. It's a tree structure, with >> the widest-coverage lists at the top and more specific lists at the >> bottom. I suppose it could be hacked as a 2-level list, but a tree >> hierarchy is more generic. > > The 2-level list is just as expressive, I think, and easier to > implement. Suppose A contains B, and B contains C, and you have a > message addressed to B and C. In order to strip out C, you'd have to > traverse the entire tree to first find B; there's no guarantee that > the top level will have anything interesting. > > Also suppose A nd D both contain B. This is actually easier to > express with the 2-level list; with a tree, you'd have to duplicate > the whole subtree under B. With a 2-level list, you just add B under > both A and D, and the code takes care of looking for a top-level B > with its own entries under it. You are right. It's faster and easier (for implementer and user) to use a 2-level list. But is anyone except me interested in it? Ted