On Sun, Jan 13, 2013 at 4:24 PM, Robert Kern <robert.k...@gmail.com> wrote:
> On Sun, Jan 13, 2013 at 6:27 PM, Nathaniel Smith <n...@pobox.com> wrote: > > Hi all, > > > > PR 2875 adds two new functions, that generalize zeros(), ones(), > > zeros_like(), ones_like(), by simply taking an arbitrary fill value: > > https://github.com/numpy/numpy/pull/2875 > > So > > np.ones((10, 10)) > > is the same as > > np.filled((10, 10), 1) > > > > The implementations are trivial, but the API seems useful because it > > provides an idiomatic way of efficiently creating an array full of > > inf, or nan, or None, whatever funny value you need. All the > > alternatives are either inefficient (np.ones(...) * np.inf) or > > cumbersome (a = np.empty(...); a.fill(...)). Or so it seems to me. But > > there's a question of taste here; one could argue instead that these > > just add more clutter to the numpy namespace. So, before we merge, > > anyone want to chime in? > > One alternative that does not expand the API with two-liners is to let > the ndarray.fill() method return self: > > a = np.empty(...).fill(20.0) > > My thought also. Shades of the Python `.sort` method... Chuck
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