[Numpy-discussion] efficient 3d histogram creation
Dag Sverre Seljebotn
Thu May 7 06:35:13 CDT 2009
Dag Sverre Seljebotn wrote:
> Stéfan van der Walt wrote:
>> 2009/5/7 Chris Colbert <email@example.com>:
>>> This was really my first attempt at doing anything constructive with Cython.
>>> It was actually unbelievably easy to work with. I think i spent less time
>>> working on this, than I did trying to find an optimized solution using pure
>>> numpy and python.
>> One aspect we often overlook is how easy it is to write a for-loop in
>> comparison to vectorisation. Besides, for-loops are sometimes easier
>> to read as well!
>> I think the Cython guys are planning some sort of templating, but I'll
>> CC Dag so that he can tell us more.
> We were discussing how it would/should look like, but noone's committed
> to implementing it so it's pretty much up in the blue I think -- someone
> might jump in and do it next week, or it might go another year, I can't
BTW the consensus pretty much ended on:
cdef class MyClass[T](Ancestor):
cdef T evaluate(T x): ...
And then instantiate with
cdef MyClass[int] obj = MyClass[int]()
Only class templates would be targeted at first.
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