Path: csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!news-transit.tcx.org.uk!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <dihedral88888@googlemail.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.017
X-Spam-Evidence: '*H*': 0.97; '*S*': 0.00; 'function,': 0.07; 'python': 0.08; 'compute': 0.09; 'reply-to:addr:comp.lang.python': 0.09; 'to:addr:comp.lang.python': 0.09; 'tuple': 0.09; 'algorithm': 0.13; 'stored': 0.13; 'accesses': 0.16; 'implemented.': 0.16; 'subject:independent': 0.16; 'cc:addr :python-list': 0.16; 'meant': 0.17; 'wrote:': 0.18; 'position,': 0.19; "haven't": 0.20; 'dec': 0.22; 'header:In-Reply-To:1': 0.22; 'dictionary': 0.23; 'pair': 0.23; 'table.': 0.23; 'cc:2**0': 0.24; "python's": 0.24; 'tree': 0.25; 'function': 0.27; 'work.': 0.28; 'cc:addr:python.org': 0.29; 'pm,': 0.29; 'hash': 0.30; 'objects.': 0.30; 'oop': 0.30; 'sun,': 0.30; 'subject:?': 0.31; 'values': 0.32; 'list': 0.32; 'objects': 0.32; 'idea': 0.32; 'header:User- Agent:1': 0.33; 'this.': 0.33; 'done': 0.34; 'from:addr:googlemail.com': 0.34; 'all.': 0.34; 'then.': 0.34; 'list.': 0.35; 'something': 0.35; 'sets': 0.35; 'explain': 0.36; 'received:google.com': 0.37; 'think': 0.37; 'maps': 0.38; 'monday,': 0.38; 'replace': 0.38; 'some': 0.38; 'received:209.85': 0.38; 'tables': 0.39; 'why': 0.39; 'called': 0.40; 'received:209': 0.40; 'type': 0.61; '2011': 0.61; 'power': 0.63; 'stated': 0.68; 'header:Reply-To:1': 0.71; 'reply-to:no real name:2**0': 0.72; 'reply-to:addr:googlegroups.com': 0.74; 'received:209.85.216.184': 0.84; 'received:mail-qy0-f184.google.com': 0.84; 'sets,': 0.84; '\xa0there': 0.91
Newsgroups: comp.lang.python
Date: Sun, 4 Dec 2011 16:52:14 -0800 (PST)
In-Reply-To: <mailman.3281.1323041121.27778.python-list@python.org>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=1.168.129.142; posting-account=5JdMBQoAAABHnS4mjpqEzxnmWtgiiVNw
References: <jb57p7$b1j$1@dough.gmane.org> <mailman.3156.1322657239.27778.python-list@python.org> <30715729.411.1322753732534.JavaMail.geo-discussion-forums@pret21> <4ED7A2CE.6070306@davea.name> <mailman.3203.1322756312.27778.python-list@python.org> <6366868.86.1322800180523.JavaMail.geo-discussion-forums@pret21> <mailman.3216.1322802013.27778.python-list@python.org> <mailman.3218.1322804917.27778.python-list@python.org> <3MKCq.194015$th7.47228@newsfe07.ams2> <26969335.380.1323013143216.JavaMail.geo-discussion-forums@prnu18> <mailman.3272.1323020507.27778.python-list@python.org> <27797359.1293.1323021983756.JavaMail.geo-discussion-forums@prfb10> <mailman.3278.1323029614.27778.python-list@python.org> <12469565.1384.1323040641935.JavaMail.geo-discussion-forums@prfj18> <mailman.3281.1323041121.27778.python-list@python.org>
User-Agent: G2/1.0
X-Google-Web-Client: true
MIME-Version: 1.0
Subject: Re: order independent hash?
From: 88888 Dihedral <dihedral88888@googlemail.com>
To: comp.lang.python@googlegroups.com
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Cc: Python <python-list@python.org>
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.12
Precedence: list
Reply-To: comp.lang.python@googlegroups.com
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>
Message-ID: <mailman.3283.1323046336.27778.python-list@python.org>
Lines: 30
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1323046336 news.xs4all.nl 6850 [2001:888:2000:d::a6]:44382
X-Complaints-To: abuse@xs4all.nl
Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:16633

On Monday, December 5, 2011 7:24:49 AM UTC+8, Ian wrote:
> On Sun, Dec 4, 2011 at 4:17 PM, 88888 Dihedral
> <dihedr...@googlemail.com> wrote:
> >> Please explain what you think a hash function is, then. =A0Per
> >> Wikipedia, "A hash function is any algorithm or subroutine that maps
> >> large data sets to smaller data sets, called keys."
> >>
> >> > Are you miss-leading the power of true OOP ?
> >>
> >> I have no idea what you are suggesting. =A0I was not talking about OOP=
 at all.
> >
> > In python the (k,v) pair in a dictionary k and v can be =A0both an obje=
cts.
> > v can be a tuple or a list. =A0There are some restrictions on k to be a=
n
> > =A0hashable type in python's implementation. The key is used to compute=
 the position of the pair to be stored in a =A0hash table. The hash functio=
n maps key k to the position in the hash table. If k1!=3Dk2 are both =A0map=
ped to the same
> > position, then something has to be done to resolve this.
>=20
> I understand how dicts / hash tables work.  I don't need you to
> explain that to me.  What you haven't explained is why you stated that
> a hash function that operates on objects is not a hash function, or
> what you meant by "misleading the power of true OOP".

If v is a tuple or a list then a dictionary in python can replace a bi-dire=
ctional list or a tree under the assumption that the hash which  accesses v=
alues stored in a  much faster way  when well implemented. =20