Re: Deep vs. shallow copy?

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed4a.news.xs4all.nl!xs4all!news.tele.dk!news.tele.dk!small.news.tele.dk!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path	<random832@fastmail.us>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.029
X-Spam-Evidence	'H': 0.94; 'S': 0.00; 'received:internal': 0.09; 'haskell,': 0.16; 'iirc': 0.16; 'iteration': 0.16; 'lisp': 0.16; 'macros': 0.16; 'message-id:@webmail.messagingengine.com': 0.16; 'received:10.202': 0.16; 'received:10.202.2': 0.16; 'received:66.111': 0.16; 'received:66.111.4': 0.16; 'received:66.111.4.27': 0.16; 'received:messagingengine.com': 0.16; 'received:out3-smtp.messagingengine.com': 0.16; 'semantics': 0.16; 'wrote:': 0.18; 'thu,': 0.19; 'programming': 0.22; 'community.': 0.22; 'all:': 0.24; 'header:In-Reply-To:1': 0.27; '13,': 0.31; 'received:66': 0.35; 'scheme': 0.36; 'subject:?': 0.36; 'received:10': 0.37; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'from:no real name:2**0': 0.61; 'header:Message-Id:1': 0.63; 'more': 0.64; 'subject:. ': 0.67; 'mar': 0.68; 'frank': 0.68; 'goal': 0.75; 'truth': 0.81; '2014,': 0.84; 'regarded': 0.84
DKIM-Signature	v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.us; h= message-id:from:to:mime-version:content-transfer-encoding :content-type:in-reply-to:references:subject:date; s=mesmtp; bh= SiPKiHJFWH6K0GeRP5nYPDh9vxQ=; b=G2fMYigHuEjRbNX9Y2TGKaBsKKRmO6LP IMBj9FXpxkqfijjV8ThSgMezrfpUk61r9I+PoToQ9qUubdwlqz2qpXUPTTSnRpLt Gk9E+4HF1r2TWVTkhcOw2Ih7rMqcvIUa411qG5zqH34Ovd2+vCujE8ocV+7ZlnR6 wVSa5tCNwwU=
DKIM-Signature	v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=message-id:from:to:mime-version :content-transfer-encoding:content-type:in-reply-to:references :subject:date; s=smtpout; bh=SiPKiHJFWH6K0GeRP5nYPDh9vxQ=; b=cTd UPDtbLmE33P3ueGAnrQAPuzd3i29ZseDNSxVGqdPuLaoVo3qSAcssz3eks/MRQMk vsW4WypiHlrqrSBp17Tnq2bWXgkBbjPP88wENdhOmomeZHozOZdUrrfpF1JQj8RJ JdaOR10SMpkStUFPQpsJyPs1DNeq75xwqRL57kJk=
X-Sasl-Enc	EBK7yaxCCZSyEbdCeWPZHQf9bRlZuK0u5FYGT+X93Pw8 1394731508
From	random832@fastmail.us
To	"" <python-list@python.org>
MIME-Version	1.0
Content-Transfer-Encoding	7bit
Content-Type	text/plain
X-Mailer	MessagingEngine.com Webmail Interface - ajax-88721676
In-Reply-To	<04d2454f-4a22-482c-9d41-f2e1d2032675@googlegroups.com>
References	<53206e6a$0$2886$e4fe514c@news2.news.xs4all.nl> <mailman.8093.1394636439.18130.python-list@python.org> <53207d77$0$2886$e4fe514c@news2.news.xs4all.nl> <5320e8c9$0$29994$c3e8da3$5496439d@news.astraweb.com> <0852919b-e5ac-42cc-b30f-f465a144e24e@googlegroups.com> <mailman.8125.1394710730.18130.python-list@python.org> <04d2454f-4a22-482c-9d41-f2e1d2032675@googlegroups.com>
Subject	Re: Deep vs. shallow copy?
Date	Thu, 13 Mar 2014 13:25:08 -0400
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.15
Precedence	list
List-Id	General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe	<https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive	<http://mail.python.org/pipermail/python-list/>
List-Post	<mailto:python-list@python.org>
List-Help	<mailto:python-list-request@python.org?subject=help>
List-Subscribe	<https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.8131.1394731512.18130.python-list@python.org> (permalink)
Lines	8
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1394731512 news.xs4all.nl 2970 [2001:888:2000:d::a6]:34499
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:68337

Show key headers only | View raw

On Thu, Mar 13, 2014, at 11:28, Rustom Mody wrote:
> Heh! I was hesitating to put that line at all: For one thing its a
> hackneyed truth in the non-FP community. For another, in practical
> Haskell, use of frank recursion is regarded as as sign of programming
> immaturity:

And IIRC Lisp and Scheme have loop macros (whose semantics are more like
a goal seek than iteration IIRC).

Thread

Deep vs. shallow copy? Alex van der Spek <zdoor@xs4all.nl> - 2014-03-12 14:25 +0000
  Re: Deep vs. shallow copy? Skip Montanaro <skip@pobox.com> - 2014-03-12 09:48 -0500
  Re: Deep vs. shallow copy? Zachary Ware <zachary.ware+pylist@gmail.com> - 2014-03-12 10:00 -0500
    Re: Deep vs. shallow copy? Alex van der Spek <zdoor@xs4all.nl> - 2014-03-12 15:29 +0000
      Re: Deep vs. shallow copy? Wayne Brehaut <wbrehaut@mcsnet.ca> - 2014-03-12 13:06 -0600
      Re: Deep vs. shallow copy? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-12 23:07 +0000
        Re: Deep vs. shallow copy? Rustom Mody <rustompmody@gmail.com> - 2014-03-12 20:09 -0700
          Re: Deep vs. shallow copy? Ian <hobson42@gmail.com> - 2014-03-13 11:38 +0000
            Re: Deep vs. shallow copy? Rustom Mody <rustompmody@gmail.com> - 2014-03-13 08:28 -0700
              Re: Deep vs. shallow copy? random832@fastmail.us - 2014-03-13 13:25 -0400
        Re: Deep vs. shallow copy? Roy Smith <roy@panix.com> - 2014-03-13 07:44 -0400
          Re: Deep vs. shallow copy? Marko Rauhamaa <marko@pacujo.net> - 2014-03-13 14:27 +0200
            Re: Deep vs. shallow copy? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-13 23:41 +0000
              Re: Deep vs. shallow copy? Chris Angelico <rosuav@gmail.com> - 2014-03-14 10:55 +1100
                Re: Deep vs. shallow copy? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-14 01:41 +0000
              Re: Deep vs. shallow copy? Ian Kelly <ian.g.kelly@gmail.com> - 2014-03-13 18:08 -0600
              Re: Deep vs. shallow copy? Chris Angelico <rosuav@gmail.com> - 2014-03-14 11:22 +1100
                Re: Deep vs. shallow copy? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-14 01:59 +0000
              Re: Deep vs. shallow copy? Rustom Mody <rustompmody@gmail.com> - 2014-03-13 19:57 -0700
                Re: Deep vs. shallow copy? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-14 04:43 +0000
              Re: Deep vs. shallow copy? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-14 06:17 +0000
          Re: Deep vs. shallow copy? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-13 23:31 +0000

csiph-web