On Sun, Feb 8, 2015 at 4:24 PM, Stefan Reiterer <dom...@gmx.net> wrote:
> I don't think this is a good comparison, especially since broadcasting is > a feature not a necessity ... > It's more like turning off/on driving assistance. > > And as already mentioned: other matrix languages also allow it, but they > warn about it's usage. > This has indeed it's merits. > *Gesendet:* Sonntag, 08. Februar 2015 um 22:17 Uhr > *Von:* "Charles R Harris" <charlesr.har...@gmail.com> > *An:* "Discussion of Numerical Python" <numpy-discussion@scipy.org> > *Betreff:* Re: [Numpy-discussion] Silent Broadcasting considered harmful > > > On Sun, Feb 8, 2015 at 2:14 PM, Stefan Reiterer <dom...@gmx.net> wrote: >> >> Yeah I'm aware of that, that's the reason why I suggested a warning >> level as an alternative. >> Setting no warnings as default would avoid breaking existing code. >> *Gesendet:* Sonntag, 08. Februar 2015 um 22:08 Uhr >> *Von:* "Eelco Hoogendoorn" <hoogendoorn.ee...@gmail.com> >> *An:* "Discussion of Numerical Python" <numpy-discussion@scipy.org> >> *Betreff:* Re: [Numpy-discussion] Silent Broadcasting considered harmful >> > I personally use Octave and/or Numpy for several years now and never >> ever needed braodcasting. >> But since it is still there there will be many users who need it, there >> will be some use for it. >> >> Uhm, yeah, there is some use for it. Im all for explicit over implicit, >> but personally current broadcasting rules have never bothered me, certainly >> not to the extent of justifying massive backwards compatibility violations. >> Take It from someone who relies on broadcasting for every other line of >> code. >> >> > > It's how numpy works. It would be like getting into your car and being > warned that it has wheels. > > Chuck > _______________________________________________ NumPy-Discussion > mailing list NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > > I agree, I do not think this is a good comparison. All cars have wheels, there are no surprises there. This is more like a car that decides to do something completely different from everything that you learned about in driving school. I find the broadcasting aspect of Numpy a turn off. If I go to add a 1x3 vector to a 3x1 vector, I want the program to warn me or error out. I don't want it to do something under the covers that has no mathematical basis or definition. Also, Octave may provide a warning, but Matlab errors out..."Matrix dimensions must agree". Which they must, at least in my world. _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > >
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