Re: Stack Overflow moderator “animuson”

Joel Goldstick joel.goldstick at gmail.com
Wed Jul 10 18:32:32 CEST 2013


call your mom


On Wed, Jul 10, 2013 at 12:18 PM, Ethan Furman <ethan at stoneleaf.us> wrote:

> On 07/10/2013 08:54 AM, Joshua Landau wrote:
>
>> On 10 July 2013 10:00, Steven D'Aprano <steve at pearwood.info> wrote:
>>
>>> On Wed, 10 Jul 2013 07:55:05 +0000, Mats Peterson wrote:
>>>
>>>  A moderator who calls himself “animuson” on Stack Overflow doesn’t want
>>>> to face the truth. He has deleted all my postings regarding Python
>>>> regular expression matching being extremely slow compared to Perl.
>>>>
>>>
>>> That's by design. We don't want to make the same mistake as Perl, where
>>> every problem is solved by a regular expression:
>>>
>>> http://neilk.net/blog/2000/06/**01/abigails-regex-to-test-for-**
>>> prime-numbers/<http://neilk.net/blog/2000/06/01/abigails-regex-to-test-for-prime-numbers/>
>>>
>>> so we deliberately make regexes as slow as possible so that programmers
>>> will look for a better way to solve their problem. If you check the
>>> source code for the re engine, you'll find that for certain regexes, it
>>> busy-waits for anything up to 30 seconds at a time, deliberately wasting
>>> cycles.
>>>
>>
>> I hate to sound like this but do you realise that this is exactly what
>> you're arguing for when saying that sum() shouldn't use "+="?
>>
>
> my_obj = SomeKoolClass()
> my_obj.modify_in_some_kool_**way()
> new_result = sum([SKC1, SKC2, SKC3], my_obj)
>
> Guess what?  You've just changed my_obj.
>
> --
> ~Ethan~
> --
> http://mail.python.org/**mailman/listinfo/python-list<http://mail.python.org/mailman/listinfo/python-list>
>



-- 
Joel Goldstick
http://joelgoldstick.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20130710/3eb51241/attachment.html>


More information about the Python-list mailing list