#6652: should not have algebra structure on streams
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Reporter: hemmecke | Owner: mhansen
Type: defect | Status: new
Priority: major | Milestone:
Component: combinatorics | Keywords:
Reviewer: | Author:
Merged: |
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combinat/species/stream.py has its origin in
{{{
svn cat svn://svn.risc.uni-
linz.ac.at/hemmecke/combinat/trunk/combinat/src/stream.as.nw
}}}
I designed the original Aldor domain `DataStream` as a container being an
equivalent of an infinite array. Since the Stream can contain any objects,
it makes no sense for the stream to provide a `__mul__` and {{{__add__}}}
method. Any algebraic operations should be defined in a derived class.
Suggestion: Remove {{{__add__}}}, {{{__mul__}}}, `_times_naive`, `stretch`
and `_stretch_gen` from stream.py and put them into a more appropriate
place in the class hierarchy.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6652>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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