On Mon, Feb 15, 2016 at 4:24 PM, Jeff Reback <jeffreb...@gmail.com> wrote: > > just an FYI. > > pandas implemented a RangeIndex in upcoming 0.18.0, mainly for memory savings, > see here, similar to how python range/xrange work. > > though there are substantial perf benefits, mainly with set operations, see here > though didn't officially benchmark thes.
Since it is a numpy-aware object (unlike the builtins), you can (and have, if I'm reading the code correctly) implement __array__() such that it does the correctly performant thing and call np.arange(). RangeIndex won't be adversely impacted by retaining the status quo. -- Robert Kern
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