Here is what I managed to get working:

print foreach (sort {(length ((keys %{$HoHoA{$b}})[0])) <=> length((keys %{$HoHoA{$a}})[0]) } keys %HoHoA);

It only works if all second keys are the same length (which is the case with your submitted code)
Is that what you want?

P!

In reply to Re: Sorting HoHoA based on Length of Second Key by Pied
in thread Sorting HoHoA based on Length of Second Key by Anonymous Monk

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