Dear Henryk, dear Mike,
On Mon, Mar 30, 2009 at 06:36:17AM -0700, Henryk Trappmann wrote:
>
> Ok, here is a first shot that has 100% coverage (except dumps):
> http://github.com/bo198214/hyperops/raw/09e1da3372d7b431cdf557ffe164df9f91c08e68/formal_powerseries.py
>
> I finally decided to name it FPSRing, for Formal Power Series Ring. It
> resides in sage.rings.formal_powerseries
>
> I hope Nicolas M. Thiery can throw a look onto it, and give me some
> suggestions (public or private), while trying out what he wanted to do
> with it, being my reviewer.
Thanks for your work! I'll try to do this. But I'll be pretty busy in
the coming days ... Feel free to ping me a reminder.
Mike: I would not mind a second view on this, as you know much better
than me how the current LazyPowerSeries code work.
> For me there are several open questions yet:
> 1. I dont know anything about coercing
> 2. I have no idea how to approach pickling, how to get dumps to work.
> I think that the attribute functions are the problem like William
> said.
> 3. I dont know what "sum_generator" and "product_generator" in Mike's
> implementation do.
> 4. I dont know about formatting docstrings.
> 5. If I define _pow_ it cant be used with non-integer exponents, this
> comes somehow from RingElement. So I instead defined __pow__. I dont
> know exactly about the benefits or drawbacks of defining _operator_
> instead of __operator__. I also dont know for which operators such
> distinction exists, e.g. is there also a _lshift_ and _rshift_ and so
> on?
I let the experts answer here.
Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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