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From: Matt Joiner <anacrolix@gmail.com>
Date: Mon, 5 Dec 2011 14:02:46 +1100
Subject: Re: order independent hash?
To: Lie Ryan <lie.1296@gmail.com>
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:16638

Yes. I sent a mail earlier asking such and it was bounced. I'm one
email from also blocking this fellow.

On Mon, Dec 5, 2011 at 12:59 PM, Lie Ryan <lie.1296@gmail.com> wrote:
> On 12/05/2011 11:52 AM, 88888 Dihedral wrote:
>>
>> 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> =C2=A0wrote:
>>>>>
>>>>> Please explain what you think a hash function is, then. =C2=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. =C2=A0I was not talking about=
 OOP at
>>>>> all.
>>>>
>>>>
>>>> In python the (k,v) pair in a dictionary k and v can be =C2=A0both an
>>>> objects.
>>>> v can be a tuple or a list. =C2=A0There are some restrictions on k to =
be an
>>>> =C2=A0hashable type in python's implementation. The key is used to com=
pute
>>>> the position of the pair to be stored in a =C2=A0hash table. The hash =
function
>>>> maps key k to the position in the hash table. If k1!=3Dk2 are both =C2=
=A0mapped to
>>>> the same
>>>> position, then something has to be done to resolve this.
>>>
>>>
>>> I understand how dicts / hash tables work. =C2=A0I don't need you to
>>> explain that to me. =C2=A0What 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-directional list or a tree under the assumption that the hash which
>> =C2=A0accesses values stored in a =C2=A0much faster way =C2=A0when well =
implemented.
>
>
> trying not to be rude, but the more you talk, the more I"m convince that
> you're trolling. Welcome to my killfile.
>
> --
> http://mail.python.org/mailman/listinfo/python-list



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=E0=B2=A0_=E0=B2=A0