#19251: LinearCode.basis() should be an immutable Sequence
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Reporter: ncohen | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.9
Component: coding theory | Resolution:
Keywords: | Merged in:
Authors: Johan S. R. | Reviewers: David Lucas
Nielsen, Nathann Cohen | Work issues:
Report Upstream: N/A | Commit:
Branch: public/19251 | 6cc755d0834799c340f881873acb9f6a57460a07
Dependencies: | Stopgaps:
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Changes (by {'newvalue': u'Johan S. R. Nielsen, Nathann Cohen', 'oldvalue':
u'Nathann Cohen'}):
* status: needs_info => needs_work
* author: Nathann Cohen => Johan S. R. Nielsen, Nathann Cohen
* cc: jsrn (removed)
* milestone: sage-duplicate/invalid/wontfix => sage-6.9
Old description:
> Right now the .basis() methd returns the rows of a matrix, which
> naturally have no ambiant space and only the methods of `list`. This
> branch makes it an alias of `generator_matrix` (it used to be an alias of
> `.gens()`) so that this information remains available.
>
> Note that this matrix is also an iterable, and that one can as easily
> iterate on the rows of that matrix as on the elements of the list it
> previously returned.
New description:
Right now the `.basis()` method returns just a `list`. This should instead
be an immutable `Sequence`, retaining the type information in its
`.universe()` method.
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Comment:
Ok, I'm on it...
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Ticket URL: <http://trac.sagemath.org/ticket/19251#comment:12>
Sage <http://www.sagemath.org>
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