From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Why don't let bound values die? Date: Mon, 06 Sep 2010 10:25:56 +0200 Organization: Organization?!? Message-ID: <87r5h7b7mz.fsf@lola.goethe.zz> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1283761579 11305 80.91.229.12 (6 Sep 2010 08:26:19 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 6 Sep 2010 08:26:19 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Sep 06 10:26:18 2010 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OsX1u-0006ay-50 for ged-emacs-devel@m.gmane.org; Mon, 06 Sep 2010 10:26:18 +0200 Original-Received: from localhost ([127.0.0.1]:38645 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OsX1t-0004bn-Gq for ged-emacs-devel@m.gmane.org; Mon, 06 Sep 2010 04:26:17 -0400 Original-Received: from [140.186.70.92] (port=48685 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OsX1n-0004aa-3F for emacs-devel@gnu.org; Mon, 06 Sep 2010 04:26:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OsX1l-0004gZ-Mh for emacs-devel@gnu.org; Mon, 06 Sep 2010 04:26:10 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:58260) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OsX1k-0004g5-VO for emacs-devel@gnu.org; Mon, 06 Sep 2010 04:26:09 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OsX1g-0006WS-QO for emacs-devel@gnu.org; Mon, 06 Sep 2010 10:26:04 +0200 Original-Received: from p508ed09e.dip.t-dialin.net ([80.142.208.158]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 06 Sep 2010 10:26:04 +0200 Original-Received: from dak by p508ed09e.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 06 Sep 2010 10:26:04 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 23 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: p508ed09e.dip.t-dialin.net X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:sEe/tW/raeCu2Gc6KBvpMAkSb4M= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:129704 Archived-At: Stefan Monnier writes: >> I think I still do not know exactly what an uninterned symbol is, but >> I guess it is something that can not be looked up, just somehow >> accessed directly. But it still has a name and I wonder why. > > Fundamentally symbols are just special kinds of immutable strings. > Obarrays then are special kinds of hash-tables which only map strings > to symbols (whose name has to be the specified string). > > A symbol may be placed in only one obarray s/only/at most/ > at any given time (because of details of the way the > obarray-hash-tables are implemented, where the linked list slots of > each hash-bucket are actually stored directly in the symbol > themselves). Uninterned symbols are not in any obarray. -- David Kastrup