If it's the same logic in every function, it should be put in the main
series() method that calls _eval_nseries.

Aaron Meurer

On Fri, Jun 24, 2016 at 6:05 PM, Francesco Bonazzi
<[email protected]> wrote:
> I was mulling over the possibility of adding support for series expansion of
> indexed objects and/or multivariate series.
>
> The _eval_nseries method could be dispatched over its second argument
> (second means the one after self).
>
> The alternative would be the classical if isinstance( ... ), which SymPy is
> full of. In this case, it would be necessary to rewrite almost all of the
> _eval_nseries around.
>
>
> On Friday, 24 June 2016 18:44:45 UTC+2, Aaron Meurer wrote:
>>
>> What code specifically do you want to use it in?
>>
>> In my experience, dispatching in SymPy functions happens by expression
>> type, which is often reflected by Python class, but not always. A
>> pattern matching based dispatching system would be more useful in my
>> opinion.
>>
>> Aaron Meurer
>>
>> On Fri, Jun 24, 2016 at 7:52 AM, Francesco Bonazzi
>> <[email protected]> wrote:
>> > Hi,
>> >
>> > are there any actual intentions of ever introducing multiple dispatch
>> > support to SymPy? Has the idea been completely abandoned?
>> >
>> > I would like to have it as a dependency, some SymPy code could be made
>> > much
>> > more readable with it.
>> >
>> > For those who are unfamiliar with the topic, some time ago we had this
>> > library developed for the purpose:
>> >
>> > http://multiple-dispatch.readthedocs.io/en/latest/
>> >
>> > https://github.com/mrocklin/multipledispatch
>> >
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