[Numpy-discussion] ufunc oddities

[Charles R Harris]

On Sat, May 24, 2008 at 9:06 PM, Robert Kern <robert.kern at gmail.com> wrote:

> On Sat, May 24, 2008 at 10:02 PM, Charles R Harris
> <charlesr.harris at gmail.com> wrote:
> > So what about the rule that the array type takes precedence over the
> scalar
> > type? That is broken for booleans.
>
> Yes, and if it wasn't an intentional special case (I don't recall
> discussing it on the list, but it might have been), then it's a bug
> and suitable for changing. The other behaviors are intentional and
> thus not suitable for changing.
>

So how do we know which is which? How does one write a test for an
unspecified behavior? And it is clear that add.reduce breaks the rules for
booleans. The result is that the boolean add function doesn't in fact *have*
a reduce method.

Chuck
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