#16107: Meta ticket: unified sequence/lazy list objects
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Reporter: rws | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.4
Component: combinatorics | Resolution:
Keywords: days57, | Merged in:
LazyPowerSeries | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: | Stopgaps:
Dependencies: #15852, #15673, #16137 |
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Comment (by dkrenn):
Replying to [comment:25 mantepse]:
> > > > Sequences have a common universe for all the elements of the lazy
list and they are (in contrast to lazy list) a `SageObject` and not only
Python's `object`.
> > >
> > > OK, so in particular this answers my question: a stream of
coefficients should not inherit from {{{lazy_list_generic}}} :-) (and
thanks for pointing out that {{{lazy_list}}} is not a class!)
> >
> > So your question back to you: What characterizes a stream on your
sense?
> > And why not using `lazy_list_generic` as base? (To point this out: It
works; has advantages and disadvantages).
>
> (I assume you mean stream of coefficients?)
Yes.
> I want both a common universe and an algebraic structure: all
coefficients are from a ring - in particular, I absolutely need a
(recognisable!) zero.
What operations are allowed on streams then? (I assume point-wise
addition; what do you need multiplication for?)
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Ticket URL: <http://trac.sagemath.org/ticket/16107#comment:26>
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