[Numpy-discussion] numpy array change notifier?
Mon Oct 27 16:45:12 CDT 2008
Brent Pedersen wrote:
> On Mon, Oct 27, 2008 at 1:56 PM, Robert Kern <email@example.com> wrote:
>> On Mon, Oct 27, 2008 at 15:54, Erik Tollerud <firstname.lastname@example.org> wrote:
>>> Is there any straightforward way of notifying on change of a numpy
>>> array that leaves the numpy arrays still efficient?
>> Not currently, no.
>> Robert Kern
>> "I have come to believe that the whole world is an enigma, a harmless
>> enigma that is made terrible by our own mad attempt to interpret it as
>> though it had an underlying truth."
>> -- Umberto Eco
>> Numpy-discussion mailing list
> out of curiosity,
> would something like this affect efficiency (and/or work):
> class Notify(numpy.ndarray):
> def __setitem__(self, *args):
> return super(Notify, self).__setitem__(*args)
> def notify(self, *args):
> print 'notify:', args
> with also overriding setslice?
I haven't given this much thought, but you'd also likely need to do this
for the infix operators (+=, etc.).
Graduate Research Assistant
School of Meteorology
University of Oklahoma
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