On 10 September 2013 18:06, Antoine Pitrou <solip...@pitrou.net> wrote:
> On Tue, 10 Sep 2013 17:38:26 -0300
> "Joao S. O. Bueno" <jsbu...@python.org.br> wrote:
>> On 10 September 2013 16:08, Paul Moore <p.f.mo...@gmail.com> 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 - but if I would use it and would need the original key without such a method it would not be trivial to get it. For example, in latim languages it is common to want accented letters to match their unaccented counterparts - pick my own first name "João" - if I'd use a transform to strip the diactriticals, and have an user input "joao" - it would match, as intended - but I would not be able to retrieve the accented version without re-implementing the class behavior. js -><- > > Regards > > Antoine. > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/jsbueno%40python.org.br _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
