[Python-ideas] Fwd: [RFC] draft PEP: Dedicated infix operators for matrix multiplication and matrix power

[M.-A. Lemburg]

On 18.03.2014 21:58, Nick Coghlan wrote:
> On 18 Mar 2014 22:18, "M.-A. Lemburg" <mal at egenix.com> wrote:
>> [...matrix method slots space tradeoff...]
> [... need for implementing number methods even on non-number types ...]
> So a *lot* of types already have their PyNumberMethods slot allocated
> (including sequence types implemented in Python), and I'd like to expand
> that to include all sequence types, even those implemented in C.
> 
> That makes the space trade-off here substantially less clear, particularly
> if matrix power ends up being added in the future (it has been dropped from
> the current PEP).

Ok, point taken :-)

> I accept that adding the new slots to PyNumberMethods is more conceptually
> coherent than I thought, though. There's also the fact that we already mess
> about populating different slots for pragmatic reasons that have nothing to
> do with conceptual integrity :)

Perhaps something to revisit for Python 4 ?!

The refactoring could lead to some space savings, untangle code and
make the C API easier to understand.

-- 
Marc-Andre Lemburg
eGenix.com

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