[Python-ideas] RFC: Multiple Dispatch

[Guido van Rossum]

Please do write about non-toy examples!


On Fri, Aug 15, 2014 at 10:55 AM, Matthew Rocklin <mrocklin at gmail.com>
wrote:

> I've definitely seen homegrown solutions like Alexander talks about in a
> variety of projects.  It has popped up a few times in SymPy.
>
> My implementation was influenced somewhat by Julia's solution which seems
> fairly sober.  Multiple dispatch has demonstrated value in that community.
>
> I used the multipledispatch library in a few of my projects.  I can
> provide examples of where it's been helpful if desired.
>
>
> On Fri, Aug 15, 2014 at 10:47 AM, Alexander Belopolsky <
> alexander.belopolsky at gmail.com> wrote:
>
>>
>> On Fri, Aug 15, 2014 at 1:28 PM, Guido van Rossum <guido at python.org>
>> wrote:
>>
>>> Are there good uses of singledispatch in the wild even?
>>
>>
>> In one of my projects, I have a todo item to convert a homegrown
>> {type:func} dictionary based dispatch to singledispatch.  It has been open
>> for 5 months already.  I wouldn't be surprised if others had something
>> similar: a good-enough (and probably buggy) solution that is not bad enough
>> to justify adding extra dependency in 2.x or replacing with a 3.x only
>> solution.
>>
>> Multiple dispatch is much harder to get right or even "good enough," so I
>> don't think singledispatch popularity or lack thereof is a good predictor
>> for multipledispatch.
>>
>
>


-- 
--Guido van Rossum (python.org/~guido)
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