From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.user Subject: Re: Interesting Behavior of 'append!' In Local Context Date: Sun, 18 Oct 2009 12:25:36 +0200 Message-ID: References: <4ADA4506.4090804@phy.cmich.edu> <2F77A419-E28E-4936-854C-5FAE76D85815@member.fsf.org> <4ADA6319.1030004@phy.cmich.edu> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1255862846 3318 80.91.229.12 (18 Oct 2009 10:47:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 18 Oct 2009 10:47:26 +0000 (UTC) Cc: guile-user@gnu.org To: Eric McDonald Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Sun Oct 18 12:47:16 2009 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1MzTIB-0003Vh-4H for guile-user@m.gmane.org; Sun, 18 Oct 2009 12:47:15 +0200 Original-Received: from localhost ([127.0.0.1]:55853 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MzTI8-0008T7-Lx for guile-user@m.gmane.org; Sun, 18 Oct 2009 06:47:13 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MzT9i-0006sL-CE for guile-user@gnu.org; Sun, 18 Oct 2009 06:38:30 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MzT9c-0006qP-4x for guile-user@gnu.org; Sun, 18 Oct 2009 06:38:28 -0400 Original-Received: from [199.232.76.173] (port=58137 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MzT9b-0006q6-IJ for guile-user@gnu.org; Sun, 18 Oct 2009 06:38:23 -0400 Original-Received: from a-pb-sasl-quonix.pobox.com ([208.72.237.25]:53984 helo=sasl.smtp.pobox.com) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1MzT9b-0002EM-58 for guile-user@gnu.org; Sun, 18 Oct 2009 06:38:23 -0400 Original-Received: from sasl.smtp.pobox.com (unknown [127.0.0.1]) by a-pb-sasl-quonix.pobox.com (Postfix) with ESMTP id EBB495D104; Sun, 18 Oct 2009 06:38:22 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; s=sasl; bh=AG/UmJF9KKqi5kmaksM/K2Jr7zA=; b=SEez3R X8yM6rBUjzeRT5rRCygOZJiBWL7/g7OBrj4DDSDlWSEDD3Sh1yZLDqqEapuoNSKo sINgapdTt28FgejxqlbWADGBGAVQSmu0ItOlfZ+w28WDC8P1fb16eH9A3IjCMoLK M54SmiGa4RA7u1N9xlgnx9MqwrpL93l1dubLc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; q=dns; s=sasl; b=IfTBFgY7tRy474CBUK251x660DEVdHOS 4c7RdDFc2zg7kayFUkCvB+RBWAlj5hU2l6xpnpvZnv2r9Zpt8mK84G860L0XwLK6 r8g0Jmn0v7cmXzW7icWP1WqLzIwz7ETLjcWOcIcnTTEC8a7vlXjYb73vvb0DKIFq 3qD9A8kHd+Y= Original-Received: from a-pb-sasl-quonix. (unknown [127.0.0.1]) by a-pb-sasl-quonix.pobox.com (Postfix) with ESMTP id DAAD35D103; Sun, 18 Oct 2009 06:38:21 -0400 (EDT) Original-Received: from unquote (unknown [83.202.40.107]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by a-pb-sasl-quonix.pobox.com (Postfix) with ESMTPSA id 6E88D5D101; Sun, 18 Oct 2009 06:38:20 -0400 (EDT) In-Reply-To: <4ADA6319.1030004@phy.cmich.edu> (Eric McDonald's message of "Sat, 17 Oct 2009 20:36:41 -0400") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.92 (gnu/linux) X-Pobox-Relay-ID: 5B667500-BBD2-11DE-B4C7-1B12EE7EF46B-02397024!a-pb-sasl-quonix.pobox.com X-detected-operating-system: by monty-python.gnu.org: Solaris 10 (beta) X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:7453 Archived-At: Hello Eric, On Sun 18 Oct 2009 02:36, Eric McDonald writes: > Stephen Compall wrote: > >> It is an error to modify literals, but it is also not required by R5RS >> to detect and inform of such erroneous modification. It is, however, > > Fair enough. I certainly wouldn't mind seeing "detect and inform" > implemented for this case. That would be nice, yes. It should be fairly easy to implement for vectors, strings, and arrays, for the upcoming Guile 2.0. Pairs are a bit trickier, due to the way they are represented in Guile, though it would be nice as well. > Anyway, sorry to trouble the list with a noobish oversight. No problem. Happy hacking :) Andy -- http://wingolog.org/