Hi Gael, More important is the following.
On Tue, 10 Jul 2007, Alan G Isaac apparently wrote: >>>> N.array([False])-N.array([True]) > array([True], dtype=bool) >>>> N.array([False])+(-N.array([True])) > array([False], dtype=bool) > The second answer is the right one, in this context. > I would call this [first!!!] answer a bug. Do you agree that the first (!!!) answer is a bug? (The basis is apparently performed as follows: integer array subtraction is first performed, and then nonzero ints are converted to True. But this gives the wrong answer and most critically breaks the equivalence of a-b and a+(-b).) Cheers, Alan _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
