[Numpy-discussion] ufunc delegation to object method
Thu Feb 2 00:04:11 CST 2012
On Mon, Jan 30, 2012 at 1:17 AM, Warren Weckesser <
> In the following code, numpy.sin() calls the object's sin() function:
> In : class Foo(object):
> ...: def sin(self):
> ...: return "spam"
> In : f = Foo()
> In : np.sin(f)
> Out: 'spam'
> Is this, in fact, guaranteed behavior for a ufunc? It does not appear to
> be documented.
> This question came up in the discussion of SciPy pull request 138 (
> https://github.com/scipy/scipy/pull/138), where the idea is to add numpy
> unary ufunc support to SciPy's sparse arrays.
> (Sorry if this email shows up twice. I sent it the first time while the
> Enthought servers were down, and eventually got an email back saying it had
> not been sent.)
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