IndexError when masking empty jaggedArray made from offsets

[jrueb]

I'm trying to apply a mask onto my JaggedArray. Unfortunately, in the corner case where the JaggedArray is empty, I can an IndexError.

a = awkward.JaggedArray.fromoffsets([1, 1], [1, 1])
mask = a > 10
a[mask]

In case of arrays created by fromcounts, this seems to work.

[jpivarski]

Awkward 1 is so close to being ready that my recommendation is to use the work-around. (Leave this issue open so that anyone else who runs into this can find it.)

Thanks for reporting it, though!