On Wed, Jun 28, 2017 at 10:48 AM, Marten van Kerkwijk <
m.h.vankerkw...@gmail.com> wrote:
> My two ¢: keep things as they are. There is just two much code that
> uses the C definition of bools, 0=False, 1=True. Coupled with casting
> every outcome that is unequal to 0 as True, * as AND, + as OR, a
About visibility of deprecations: this is *very* tricky - if we make
it more visible, every user is going to see deprecation warnings all
the time, about things they can do nothing about, because they occur
inside other packages. I think in the end the only choice is to have
automated testing that
Just as a comment: It would be really nice if NumPy could slow down the
pace of deprecations, or at least make the warnings about deprecations more
visible. It seems like every release breaks some subset of our test suite
(we only had one or two cases of using the binary - operator on boolean
array
My two ¢: keep things as they are. There is just two much code that
uses the C definition of bools, 0=False, 1=True. Coupled with casting
every outcome that is unequal to 0 as True, * as AND, + as OR, and -
as XOR makes sense (and -True would indeed be True, but I'm quite
happy to have that one rem
On 6/27/2017 5:35 PM, Nathaniel Smith wrote:
I remember... The major issue here is that some people want dot(a, b) on
Boolean matrices to use these semantics, right?
Yes; this has worked in the past, and loss of this functionality is unexpected.
That said, I haven't used this outside of a tea
It seems to me that after a healthy post-deprecation cycle, and if we
choose to keep the Z/2 meaning of __sub__, it might be worth reintroducing
__neg__ as a no-op? AFAICT, this is consistent with the Z/2 interpretation?
Eric
On Wed, 28 Jun 2017 at 00:08 Nathaniel Smith wrote:
> On Tue, Jun 27,
On Tue, Jun 27, 2017 at 3:09 PM, Robert Kern wrote:
> On Tue, Jun 27, 2017 at 3:01 PM, Benjamin Root wrote:
>>
>> Forgive my ignorance, but what is "Z/2"?
>
> https://groupprops.subwiki.org/wiki/Cyclic_group:Z2
> https://en.wikipedia.org/wiki/Cyclic_group
This might be a slightly better link?
ht
On Tue, Jun 27, 2017 at 3:01 PM, Benjamin Root wrote:
>
> Forgive my ignorance, but what is "Z/2"?
https://groupprops.subwiki.org/wiki/Cyclic_group:Z2
https://en.wikipedia.org/wiki/Cyclic_group
--
Robert Kern
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Forgive my ignorance, but what is "Z/2"?
On Tue, Jun 27, 2017 at 5:35 PM, Nathaniel Smith wrote:
> On Jun 26, 2017 6:56 PM, "Charles R Harris"
> wrote:
>
>
>> On 27 Jun 2017, 9:25 AM +1000, Nathaniel Smith , wrote:
>>
> I guess my preference would be:
>> 1) deprecate +
>> 2) move binary - back
On Jun 26, 2017 6:56 PM, "Charles R Harris"
wrote:
> On 27 Jun 2017, 9:25 AM +1000, Nathaniel Smith , wrote:
>
I guess my preference would be:
> 1) deprecate +
> 2) move binary - back to deprecated-but-not-an-error
> 3) fix np.diff to use logical_xor when the inputs are boolean, since
> that see
On Mon, Jun 26, 2017 at 6:14 PM, Juan Nunez-Iglesias
wrote:
> OMG deprecating + would be a nightmare. I can’t even begin to count the
> number of times I’ve used e.g. np.sum(arr == num)… Originally with a dtype
> cast but generally I’ve removed it because it worked.
>
> … But I just saw the behav
OMG deprecating + would be a nightmare. I can’t even begin to count the number
of times I’ve used e.g. np.sum(arr == num)… Originally with a dtype cast but
generally I’ve removed it because it worked.
… But I just saw the behaviour of `sum` is different from that of adding arrays
together (wher
On Sun, Jun 25, 2017 at 9:45 AM, Stefan van der Walt
wrote:
> Hi Chuck
>
> On Sun, Jun 25, 2017, at 09:32, Charles R Harris wrote:
>
>> The boolean binary '-' operator was deprecated back in NumPy 1.9 and changed
>> to an error in 1.13. This caused a number of failures in downstream
>> projects. T
On Sun, 2017-06-25 at 18:59 +0200, Julian Taylor wrote:
> On 25.06.2017 18:45, Stefan van der Walt wrote:
> > Hi Chuck
> >
> > On Sun, Jun 25, 2017, at 09:32, Charles R Harris wrote:
> > > The boolean binary '-' operator was deprecated back in NumPy 1.9
> > > and
> > > changed to an error in 1.13.
On 25.06.2017 18:45, Stefan van der Walt wrote:
> Hi Chuck
>
> On Sun, Jun 25, 2017, at 09:32, Charles R Harris wrote:
>> The boolean binary '-' operator was deprecated back in NumPy 1.9 and
>> changed to an error in 1.13. This caused a number of failures in
>> downstream projects. The choices now
Hi Chuck
On Sun, Jun 25, 2017, at 09:32, Charles R Harris wrote:
> The boolean binary '-' operator was deprecated back in NumPy 1.9 and
> changed to an error in 1.13. This caused a number of failures in
> downstream projects. The choices now are to continue the deprecation
> for another couple of
Hi All,
The boolean binary '-' operator was deprecated back in NumPy 1.9 and
changed to an error in 1.13. This caused a number of failures in downstream
projects. The choices now are to continue the deprecation for another
couple of releases, or simply give up on the change. For booleans, `a - b`
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