Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #83718

Re: Comparisons and sorting of a numeric class....

Path csiph.com!usenet.pasdenom.info!gegeweb.org!usenet-fr.net!nerim.net!novso.com!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <ian.g.kelly@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.005
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'anyway.': 0.05; 'cpython': 0.05; 'interpreter': 0.05; 'discard': 0.07; 'returns,': 0.09; 'jan': 0.12; '10:00': 0.16; 'expression,': 0.16; 'loop.': 0.16; 'none.': 0.16; 'wrote:': 0.18; 'memory': 0.22; "shouldn't": 0.24; 'header:In-Reply-To:1': 0.27; 'chris': 0.29; 'am,': 0.29; "doesn't": 0.30; 'message-id:@mail.gmail.com': 0.30; 'code': 0.31; '13,': 0.31; 'away.': 0.31; 'received:google.com': 0.35; 'whatever': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'though,': 0.39; 'to:addr:python.org': 0.39; 'even': 0.60; 'above,': 0.60; 'simple': 0.61; '2015': 0.84
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=40On3cv3mgBPmuvnKyPb4ZGKntK1wpD9PQYakx2rtWg=; b=ZNUWmgGpp5O1LT/cJDxM7YBbjxZK0GX6Sv+XM5lU9AE3ilaBp0V3LLZruvytUYd7KW hXlxisf9r2/WJb30YKE9BsQLDNvqZyTUlGBdaiBPG4H/dbDfcwkX0Fyjiry704NpkwZS hRcnBglsZYM0jgu8UaIyh8+qfIW68fvaDqMUclAwrSVxC361yuLjANcXl4nSKCiDl9eM ZfLJMslv00NhZBNsteJSIqEXK+9Yos5je3iclCYPX5qQH/nydjjt3obIa5trBhb/ZqmC Aw16y58Zc/8zVWJjHYvTy9bPDcirLFFyTxNkLsnbKcKFJ4Up6j/FWLJZjBK6nVdbZQnG bVVg==
X-Received by 10.68.65.108 with SMTP id w12mr53311610pbs.96.1421175422390; Tue, 13 Jan 2015 10:57:02 -0800 (PST)
MIME-Version 1.0
In-Reply-To <CAPTjJmppq_4Bova_OvXVJN8Q+jGK22rFdoxjLWtM9F5_yF4RsQ@mail.gmail.com>
References <54ABB88A.7070504@r3dsolutions.com> <54ABC52A.1050507@davea.name> <54ABE383.3020801@r3dsolutions.com> <CAPTjJmpktyHfghEr+cjPrhso7JgB4VfS4=5Gdi95gT0aFbSYGA@mail.gmail.com> <54AC97D9.4010504@r3dsolutions.com> <CAPTjJmooTK_+HVoeyeSrqBHN1=YjRYQ2kfDyQtL9JoA9SbTqsQ@mail.gmail.com> <54ACAA04.60801@r3dsolutions.com> <54ADC99F.3020405@stoneleaf.us> <54B44A64.7010105@r3dsolutions.com> <CAPTjJmr0Bqcyj=VBADVSthSZ+pYMXQeNC-j8qLC2xHAVLUmcgA@mail.gmail.com> <mailman.17650.1421114374.18130.python-list@python.org> <54b4aded$0$2738$c3e8da3$76491128@news.astraweb.com> <CAPTjJmq5E+LJ8gjXQa7Sf+smc8ug59YZpofp7PH6WwjL55Gv=Q@mail.gmail.com> <mailman.17669.1421146184.18130.python-list@python.org> <87lhl7c5dt.fsf@elektro.pacujo.net> <CAPTjJmppq_4Bova_OvXVJN8Q+jGK22rFdoxjLWtM9F5_yF4RsQ@mail.gmail.com>
From Ian Kelly <ian.g.kelly@gmail.com>
Date Tue, 13 Jan 2015 11:56:22 -0700
Subject Re: Comparisons and sorting of a numeric class....
To Python <python-list@python.org>
Content-Type text/plain; charset=UTF-8
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.17691.1421175432.18130.python-list@python.org> (permalink)
Lines 10
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1421175432 news.xs4all.nl 2921 [2001:888:2000:d::a6]:45803
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:83718

Show key headers only | View raw

On Tue, Jan 13, 2015 at 4:20 AM, Chris Angelico <rosuav@gmail.com> wrote:
> On Tue, Jan 13, 2015 at 10:00 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
>> The code above, though, shouldn't consume memory since it is a simple
>> tail-recursive loop.
>
> Only if the interpreter can optimize it away. Bear in mind that it
> doesn't _return_ the result of that expression, so it needs to take
> whatever f() returns, discard it, and return None.

And CPython doesn't even try to optimize tail recursion anyway.

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: Comparisons and sorting of a numeric class.... Andrew Robinson <andrew3@r3dsolutions.com> - 2015-01-12 17:59 -0800
  Re: Comparisons and sorting of a numeric class.... Steven D'Aprano <steve@pearwood.info> - 2015-01-13 05:32 +0000
    Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-13 17:13 +1100
    Re: Comparisons and sorting of a numeric class.... Terry Reedy <tjreedy@udel.edu> - 2015-01-13 05:49 -0500
      Re: Comparisons and sorting of a numeric class.... Marko Rauhamaa <marko@pacujo.net> - 2015-01-13 13:00 +0200
        Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-13 22:20 +1100
        Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-13 11:56 -0700
        Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-14 06:02 +1100
    Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-13 21:56 +1100
    Re: Comparisons and sorting of a numeric class.... Andrew Robinson <andrew3@r3dsolutions.com> - 2015-01-13 16:12 -0800
    Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-14 01:31 -0700
    Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-14 22:26 -0700
      Re: Comparisons and sorting of a numeric class.... Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-01-16 22:23 +1300
    Re: Comparisons and sorting of a numeric class.... Andrew Robinson <andrew3@r3dsolutions.com> - 2015-01-14 23:23 -0800
      Re: Comparisons and sorting of a numeric class.... Steven D'Aprano <steve@pearwood.info> - 2015-01-15 08:41 +0000
        Re: Comparisons and sorting of a numeric class.... Andrew Robinson <andrew3@r3dsolutions.com> - 2015-01-15 17:45 -0800
          Re: Comparisons and sorting of a numeric class.... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-16 18:33 +1100
          Re: Comparisons and sorting of a numeric class.... Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-01-17 00:07 +1300
          Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-16 03:22 -0800
          Re: Comparisons and sorting of a numeric class.... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-17 23:27 +1100
        Re: Comparisons and sorting of a numeric class.... Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-16 02:27 +0000
        Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-15 22:01 -0700
        Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-16 17:58 +1100
      Re: Comparisons and sorting of a numeric class.... Rob Gaddi <rgaddi@technologyhighland.invalid> - 2015-01-15 09:54 -0800
        Re: Comparisons and sorting of a numeric class.... Andrew Robinson <andrew3@r3dsolutions.com> - 2015-01-26 15:47 -0800
        Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-26 18:50 -0700
    Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-15 10:05 -0700
    Re: Comparisons and sorting of a numeric class.... Andrew Robinson <andrew3@r3dsolutions.com> - 2015-01-23 03:46 -0800
      Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 07:31 -0800
        Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-23 09:50 -0700
          Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 09:03 -0800
            Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-24 04:23 +1100
              Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 09:29 -0800
            Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-23 11:04 -0700
              Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 19:13 -0800
              Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 19:21 -0800
            Re: Comparisons and sorting of a numeric class.... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-24 16:01 +1100
              Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-24 16:43 +1100
          Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 09:22 -0800
            Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-24 04:37 +1100
              Re: Comparisons and sorting of a numeric class.... Rustom Mody <rustompmody@gmail.com> - 2015-01-23 09:45 -0800
                Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-24 05:03 +1100
                Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-23 11:13 -0700
      Re: Comparisons and sorting of a numeric class.... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-24 19:27 +1100
    Re: Comparisons and sorting of a numeric class.... Chris Angelico <rosuav@gmail.com> - 2015-01-23 22:58 +1100
    Re: Comparisons and sorting of a numeric class.... Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-23 12:07 +0000
    Re: Comparisons and sorting of a numeric class.... Terry Reedy <tjreedy@udel.edu> - 2015-01-23 11:17 -0500
    Re: Comparisons and sorting of a numeric class.... Ian Kelly <ian.g.kelly@gmail.com> - 2015-01-23 11:00 -0700

csiph-web