This is more problematic:
sage: v=vector([1,1,1])
sage: v.set_immutable()
sage: hash(2*v)
...
TypeError: mutable vectors are unhashable
Nathann
On 23 October 2015 at 14:04, Nathann Cohen <nathann.co...@gmail.com> wrote:
> Hello everybody,
>
> When calling .row() on an immutable matrix, one gets mutable vectors.
> I can easily avoid it for the code I am writing, but do you think we
> should do something about it?
>
> sage: m = matrix.ones(10)
> sage: m.set_immutable()
> sage: hash(m.row(0))
> ...
> TypeError: mutable vectors are unhashable
>
> Nathann
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