On Tue, 2012-02-14 at 15:12 -0800, Chris Barker wrote: > > On Tue, Feb 14, 2012 at 9:16 AM, Dag Sverre Seljebotn > <d.s.seljeb...@astro.uio.no> wrote: > > It was about the need for a dedicated matrix multiplication > operator. > > has anyone proposed that? I do think we've had a proposal on the table > for generally more operators: i.e. like matlab's ".*" vs "*", and yes, > matrix multiplication would be one use of that feature.
One thing that would be nice would to be able to do something like: a = H * b mapping to something like H.__new_mul__(b, a) so that it's becomes possible to write to a pre-existing object, a. I'm not sure how to syntatically deal with this. Perhaps a[:] = H * b could carry that implicit connotation (with a fallback to create an interim array). It's not exactly clean though. Actually, having some syntax for any operation in which the left hand side of the assignment is presented as an argument would allow some fun things. Though i'm not sure how it makes sense if doesn't yet exist. I'm sure someone can tell me why this is a really bad idea! Cheers, Henry _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
