#17659: make symbolic series subclass of Expression
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Reporter: rws | Owner:
Type: | Status: positive_review
enhancement | Milestone: sage-6.10
Priority: major | Resolution:
Component: | Merged in:
symbolics | Reviewers: Vincent Delecroix
Keywords: | Work issues:
Authors: Ralf | Commit:
Stephan | d5cc4241d638adb1329adbc737fa29591fc204b6
Report Upstream: N/A | Stopgaps:
Branch: |
u/rws/17659-1 |
Dependencies: |
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Changes (by vdelecroix):
* status: needs_review => positive_review
Old description:
> Making `Expression.series` create `SymbolicSeries` (a subclass of
> `Expression`) and moving the series code into a separate file
> `series.pyx`
> * reflects the fact that expressions and series don't commute
> * allows upcoming fixes that don't clutter `Expression` methods with `if
> ex.is_a_series():`
> * makes for better documentation via having a `Symbolic Series` ref man
> page
>
> In refactoring language this is "replace conditional with polymorphism".
>
> #16203, #17400, and 17402 depend on this.
New description:
Making `Expression.series` create `SymbolicSeries` (a subclass of
`Expression`) and moving the series code into a separate file `series.pyx`
* reflects the fact that expressions and series don't commute
* allows upcoming fixes that don't clutter `Expression` methods with `if
ex.is_a_series():`
* makes for better documentation via having a `Symbolic Series` ref man
page
In refactoring language this is "replace conditional with polymorphism".
#16203, #17400, and #17402 depend on this.
--
Comment:
Good for me.
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Ticket URL: <http://trac.sagemath.org/ticket/17659#comment:36>
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