[Numpy-discussion] Re: Numpy-discussion digest, Vol 1 #152 - 2 msgs
Barrett at stsci.edu
Wed Jan 3 17:04:34 CST 2001
Travis Oliphant writes:
> > I have therefore come to the conclusion that we have been barking up the
> > wrong tree. There might be a few cases where inheritance would buy you
> > something, but essentially Numeric and MA are useless as parents. Instead,
> > what would be good to have is a python class Numeric built upon a suite of C
> > routines that did all the real work, such as adding, transposing, iterating
> > over elements, applying a function to each element, etc.
> I think this is what I've been trying to do in the "rewrite." Paul
> Barrett has made some excellent progress here.
I am currently writing the PEP 209: Multidimensional Arrays
documentation and hope to submit the initial draft by the end of the
week for comments. The proposed design is along the lines Paul Dubois
> > Since it is now
> > possible to build a Python class with C methods, which it was not when
> > Numeric was created, we ought to think about it.
> What does this mean? What feature gives this ability? I'm not sure I see
> when this changed?
I'd also like to know what Paul Dubois means by this.
> > Such an API could be used
> > to make other classes with good performance. We could lose the artificial
> > layer that is in there now that makes it so tedious to add a function. (I
> > counted something like five or six places I had to modify when I added
> > "put".)
> I'd love to talk more with you about this.
Dr. Paul Barrett Space Telescope Science Institute
Phone: 410-338-4475 ESS/Science Software Group
FAX: 410-338-4767 Baltimore, MD 21218
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