#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:18 mantepse]:
> Replying to [comment:16 dkrenn]:
> > - With 1. you can only use `lazy_list_generic`, but no derived class
like `lazy_list_iterator` directly; you have to create a
`lazy_list_generic` which tracks the other (as its `master` attribute; is
already implemented since used with slices)
>
> Could you explain? What does it mean that you cannot use a derived
class directly?
{{{
class InfiniteSequence(SageObject, lazy_list_generic)
}}}
But when using the factory `lazy_list`, I may get a `lazy_list_iterator`
or similar, so AFAIK I cannot use it in `InfiniteSequence` directly. I
need to do either
- create `class InfiniteSequenceIterator(InfiniteSequence,
lazy_list_iterator)` (and have to do this for all possible `lazy_list_*`
or
- create a `lazy_list_generic` (`InfiniteSequence`), which uses the data
of the `lazy_list_iterator`, i.e., tracks `lazy_list_iterator`. Thus
having always two `lazy_list_*` instances instantiated.
--
Ticket URL: <http://trac.sagemath.org/ticket/16107#comment:19>
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