Re: [Python-Dev] Add a "transformdict" to collections

2013年9月10日 16:13:30 -0700 

On 09/10/2013 03:12 PM, MRAB wrote:

On 10/09/2013 22:46, Antoine Pitrou wrote:

On 2013年9月10日 18:44:20 -0300
"Joao S. O. Bueno" <[email protected]> wrote:

On 10 September 2013 18:06, Antoine Pitrou <[email protected]> wrote:
> On 2013年9月10日 17:38:26 -0300
> "Joao S. O. Bueno" <[email protected]> wrote:
>> On 10 September 2013 16:08, Paul Moore <[email protected]> wrote:
>> > If you provide "retain the last", I can't see any obvious way of
>> > implementing "retain the first" in application code without in effect
>> > reimplementing the class.
>>
>> Which reminds one - this class should obviously have a method for
>> retrivieng the original key value, given a matching key -
>>
>> d.canonical('foo') -> 'Foo'
>
> I don't know. Is there any use case?
> (sure, it is trivially implemented)
Well, I'd expect it to simply be there. I had not thought of
other usecases for the transformdict itself -

I had the same thought.

Well, it is not here for dict, set, etc.

In those cases the key in the dict == the key you're looking for.

With the exception of numbers, of course (float vs int vs Decimal, etc.).
But if that distinction was useful for someone they could use this new 
TransformDict. :)
--
~Ethan~
_______________________________________________
Python-Dev mailing list
[email protected]
https://mail.python.org/mailman/listinfo/python-dev
Unsubscribe: 
https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com

Reply via email to