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

Groups > comp.lang.python > #49231

Re: What is the semantics meaning of 'object'?

Path csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!news.albasani.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <rosuav@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.054
X-Spam-Evidence '*H*': 0.89; '*S*': 0.00; '"class"': 0.09; 'integers': 0.09; 'subtle': 0.09; 'python': 0.11; 'ah,': 0.16; 'composition.': 0.16; 'dict': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'hides': 0.16; 'inheritance': 0.16; 'interpreter,': 0.16; 'janssen': 0.16; 'subject:object': 0.16; 'wrote:': 0.18; 'wed,': 0.18; '>>>': 0.22; 'saying': 0.22; 'certainly': 0.24; 'lets': 0.24; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'statement': 0.30; 'message-id:@mail.gmail.com': 0.30; '>>>>': 0.31; 'container': 0.31; 'object.': 0.31; 'piece': 0.31; 'public.': 0.31; 'class': 0.32; 'critical': 0.32; 'subject:the': 0.34; 'but': 0.35; 'received:google.com': 0.35; 'really': 0.36; 'c++': 0.36; 'set.': 0.36; 'members.': 0.37; 'two': 0.37; 'list': 0.37; 'to:addr:python-list': 0.38; 'anything': 0.39; 'though,': 0.39; 'to:addr:python.org': 0.39; 'called': 0.40; 'how': 0.40; 'days': 0.60; "you're": 0.61; "you've": 0.63; 'making': 0.63; 'between': 0.67; '26,': 0.68; 'combining': 0.68; 'fact,': 0.69; 'gotten': 0.74; 'gain': 0.79; 'difference.': 0.84; 'hardly': 0.84; 'thing,': 0.91; '2013': 0.98
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=A6j+onvMVWfRtgD5+wzDQjfgMVF+dL9NUEJxT7Qx9Po=; b=gCI8LJt8eRbb4Pzr1LAna2xAGzrfMINvTt1VgabFS8ClUmWMp9qEU0N6JOFUYAJQwB fcCnrjQEArQPjUEAeSklNCGqrH0ZW6DHSH14vvPFhq3SdVEsasml3NqZ8SK47NKG9vp8 fkf3Njt0gDLG0udZaVQc2W6NvO2SuR5O3CYbkNK4OjEwBUNgX7yGiINjaCiHJryg8wgF iy4N21Fg1EfwWPwdC+79dfSY/kwXKBQE6IoZ1fBZTqGWBRgCWtrFZuakx2bywxhjBmAz dq3mfSvjPjoRVeJqppyU7n0YgJ2QHhvg2I9I8xN42OshRnSbbllA2Uk1v5qPe4mRTNcm O4Fw==
MIME-Version 1.0
X-Received by 10.52.163.165 with SMTP id yj5mr1006708vdb.104.1372231549351; Wed, 26 Jun 2013 00:25:49 -0700 (PDT)
In-Reply-To <CAMjeLr9f4JEuAXr05iuJsQ67HTZt5kKGDeFEoyeZC6dGVHV3dA@mail.gmail.com>
References <15ba0011-bbf1-42f7-b3ea-1c1d4b70e56b@googlegroups.com> <51c66962$0$29999$c3e8da3$5496439d@news.astraweb.com> <20130623133546.GA2308@capricorn> <mailman.3729.1372004188.3114.python-list@python.org> <51c723b4$0$29999$c3e8da3$5496439d@news.astraweb.com> <51C74D6E.6030200@rece.vub.ac.be> <CALwzidnf0h3GUdeQFjwwhMYXXJVyOCFuE-kc564k-j_1icoC_g@mail.gmail.com> <CAMjeLr-Kqg1uu+CSn+jKXLF7bQHrci06WewgJHF+b+AwZwQAaw@mail.gmail.com> <CALwzidk2dsJz1eh0PhGdGR1Nj=atbuG09vMXjbPOf3k=LsoB2Q@mail.gmail.com> <CAMjeLr_pr2OPYzR=tQgkV8ekk37_Uif3g+8nGzPVUY5Kd7+v7g@mail.gmail.com> <CAPTjJmoxVN4N79AwMsRZQovQ6OVHeAs+cuUoS_rYTkNfKVJjmg@mail.gmail.com> <CAMjeLr86o0=mDBGSExvqwhCU=bcWMhg6yeu2q8ZkDr=NFyYTNA@mail.gmail.com> <CALwzid=RxBth6VMGtzT-t7HokeRGTVDtQn25qsk5uMd+13oQRw@mail.gmail.com> <CAMjeLr9f4JEuAXr05iuJsQ67HTZt5kKGDeFEoyeZC6dGVHV3dA@mail.gmail.com>
Date Wed, 26 Jun 2013 17:25:49 +1000
Subject Re: What is the semantics meaning of 'object'?
From Chris Angelico <rosuav@gmail.com>
To python-list@python.org
Content-Type text/plain; charset=ISO-8859-1
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 <http://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 <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.3877.1372231552.3114.python-list@python.org> (permalink)
Lines 31
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1372231552 news.xs4all.nl 15891 [2001:888:2000:d::a6]:48134
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:49231

Show key headers only | View raw

On Wed, Jun 26, 2013 at 11:07 AM, Mark Janssen
<dreamingforward@gmail.com> wrote:
>>>> Combining two integers lets you make a Rational.
>>>
>>> Ah, but what is going to group them together?  You see you've already
>>> gotten seduced.  Python already uses a set to group them together --
>>> it's called a Dict and it's in every Class object.
>>
>> When you inherit a "set" to make a Rational, you're making the
>> statement (to the interpreter, if nothing else) that a Rational is-a
>> set.
>
> No you don't *inherit* a set to make a Rational, although you gain a
> set to make it.  It's a subtle thing, because at the center of it
> articulates the very difference between a piece of data and a
> container to hold that data.  Or is the container the data?
>
> C++ already solves this di-lemma.  It made "class" which is exactly
> like a "struct", but hides all it's data members.  That critical
> distinction makes all the difference.  I don't know how many people on
> the list really appreciate it.

I certainly don't. In fact, I hardly use "class" in C++ these days - I
just use "struct" and let the members be public. How is that
significant?

The thing you're completely missing, though, is that NONE of what
you're saying has anything to do with inheritance or super(). It's all
composition.

ChrisA

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

Thread

What is the semantics meaning of 'object'? Adam <jiang.adam@gmail.com> - 2013-06-22 19:58 -0700
  Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 03:20 +0000
    Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-22 22:27 -0600
      Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 05:23 +0000
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-22 23:40 -0600
          Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 17:29 +0000
            Re: What is the semantics meaning of 'object'? Rotwang <sg552@hotmail.co.uk> - 2013-06-24 02:53 +0100
              Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-24 06:31 +0000
                Re: What is the semantics meaning of 'object'? Rotwang <sg552@hotmail.co.uk> - 2013-06-24 16:00 +0100
                Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-24 11:23 -0600
    Re: What is the semantics meaning of 'object'? Adam Jiang <jiang.adam@gmail.com> - 2013-06-23 22:35 +0900
    Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-23 10:15 -0600
      Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 16:35 +0000
        Re: What is the semantics meaning of 'object'? Roy Smith <roy@panix.com> - 2013-06-23 12:49 -0400
          Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-23 11:08 -0600
            Re: What is the semantics meaning of 'object'? Roy Smith <roy@panix.com> - 2013-06-23 14:14 -0400
          Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-23 11:18 -0600
            Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 17:36 +0000
              Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-23 12:04 -0600
                Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 18:50 +0000
                Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-23 13:09 -0600
                Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-24 01:12 +0000
                Re: What is the semantics meaning of 'object'? Roy Smith <roy@panix.com> - 2013-06-23 15:24 -0400
                Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-24 01:27 +0000
                Re: What is the semantics meaning of 'object'? Roy Smith <roy@panix.com> - 2013-06-23 21:38 -0400
                Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-24 08:06 +0000
                Re: What is the semantics meaning of 'object'? Roy Smith <roy@panix.com> - 2013-06-24 08:41 -0400
                Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-24 08:58 -0700
                Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-24 23:51 +0000
                Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-24 11:26 -0600
                Re: What is the semantics meaning of 'object'? Ethan Furman <ethan@stoneleaf.us> - 2013-06-26 13:14 -0700
                Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-26 23:54 +0000
                Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-26 19:03 -0600
                Re: What is the semantics meaning of 'object'? Ethan Furman <ethan@stoneleaf.us> - 2013-06-26 17:38 -0700
          Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-23 18:46 +0000
            Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-23 13:05 -0600
            Re: What is the semantics meaning of 'object'? Ethan Furman <ethan@stoneleaf.us> - 2013-06-26 13:37 -0700
          Re: What is the semantics meaning of 'object'? Rick Johnson <rantingrickjohnson@gmail.com> - 2013-06-23 13:33 -0700
        Re: What is the semantics meaning of 'object'? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-06-23 21:33 +0200
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-25 11:44 -0600
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 14:58 -0700
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 08:17 +1000
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-25 16:21 -0600
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-25 16:25 -0600
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 15:29 -0700
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 15:27 -0700
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 15:38 -0700
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 08:39 +1000
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 08:47 +1000
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 08:57 +1000
          Re: What is the semantics meaning of 'object'? Rotwang <sg552@hotmail.co.uk> - 2013-06-26 16:16 +0100
            Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-27 01:23 +1000
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-25 17:07 -0600
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 09:08 +1000
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-25 17:10 -0600
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 16:19 -0700
          Re: What is the semantics meaning of 'object'? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-26 08:36 +0000
          Re: What is the semantics meaning of 'object'? alex23 <wuwei23@gmail.com> - 2013-06-28 10:19 +1000
            Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-28 11:55 -0700
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 16:00 -0700
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-25 18:19 -0600
        Re: What is the semantics meaning of 'object'? Mark Janssen <dreamingforward@gmail.com> - 2013-06-25 18:07 -0700
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 17:25 +1000
        Re: What is the semantics meaning of 'object'? Ian Kelly <ian.g.kelly@gmail.com> - 2013-06-26 02:53 -0600
        Re: What is the semantics meaning of 'object'? Chris Angelico <rosuav@gmail.com> - 2013-06-26 09:54 +1000
        Re: What is the semantics meaning of 'object'? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-06-26 12:56 +0200
      Re: What is the semantics meaning of 'object'? Rick Johnson <rantingrickjohnson@gmail.com> - 2013-06-23 13:12 -0700

csiph-web