[Zope-dev] ZTK 2.0: Deprecate zope.sequencesort

[Tres Seaver]

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On 02/28/2013 10:00 PM, Lennart Regebro wrote:
> On Thu, Feb 28, 2013 at 5:33 PM, Tres Seaver <tseaver at palladion.com> 
> wrote:
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>> 
>> On 02/28/2013 10:41 AM, Lennart Regebro wrote:
>> 
>>> Reading through the code, it seems to use a lot of code to provide
>>> quite basic sorting functionality. It feels like it's trying to
>>> fill the same role as sorted() does since Python 2.4.
>> 
>> The other features (locale-aware sorting, sort different keys using
>>  different algorithms / directions) are not easy to emulate using 
>> 'sorted()'
> 
> Locale aware sorting can be tricky, I'll have to look at that code 
> again. Sorting different keys and directions are trivial with 
> sorted(). I'm not sure what different "algorithms" mean, with sorted 
> you implement a function that returns a sorting key, that sorting key
>  is then used to sort. It should be possible to sort according to any
>  algorithm that way.

Assuming an unsorted list of news stories, how would you use sorted to
get them ordered by category (ascending) + publication date (descending)?

If you spend more than a minute on it (e.g., trying to come up with a
bug-free way to compute "negative dates") you've proved my mpoint. :)



Tres.
- -- 
===================================================================
Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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