Stéfan van der Walt wrote:
Hi Dag
2009/3/5 Dag Sverre Seljebotn <dagss@student.matnat.uio.no>:
More details: http://wiki.cython.org/enhancements/buffersyntax
Interesting proposal! Am I correct in thinking that you'd have to re-implement a lot of NumPy yourself to get this working? Or are you planning to build on NumPy + C-API?
First off, the proposal now is simply to change the syntax for existing features, which would simply disable arithmetic and slicing this time around. Slicing could perhaps happen over summer, but aritmetic would likely not happen for some time. The only point now is that before the syntax and work habit is *too* fixed, one could leave the road more open for it. But yes, to implement that one would need to reimplement parts of NumPy to get it working. But because code would be generated specifically for the situation inline, I think it would be more like reimplementing Numexpr than reimplementing NumPy. I think one could simply invoke Numexpr as a first implementation (and make it an optional Cython plugin). The fact that any performance improvements cannot be done incrementally and transparently though is certainly speaking against the syntax/semantics. -- Dag Sverre