[Numpy-discussion] Adding an ndarray.dot method

[Charles R Harris]

On Thu, Apr 29, 2010 at 1:30 PM, Pauli Virtanen <pav at iki.fi> wrote:

> Wed, 28 Apr 2010 14:12:07 -0400, Alan G Isaac wrote:
> [clip]
> > Here is a related ticket that proposes a more explicit alternative:
> > adding a ``dot`` method to ndarray.
> > http://projects.scipy.org/numpy/ticket/1456
>
> I kind of like this idea. Simple, obvious, and leads
> to clear code:
>
>        a.dot(b).dot(c)
>
> or in another multiplication order,
>
>        a.dot(b.dot(c))
>
> And here's an implementation:
>
>
> http://github.com/pv/numpy-work/commit/414429ce0bb0c4b7e780c4078c5ff71c113050b6
>
> I think I'm going to apply this, unless someone complains, as I
> don't see any downsides (except maybe adding one more to the
> huge list of methods ndarray already has).
>
>
That should do it. I was going to link directly to the code in
multiarraymodule, maybe break it out into a separate dot.c file, but the
call to the python function gets to the goal with less effort.

Chuck
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