A faster way to calculate

length($_) % 2

is to do this:

length($_) & 1

Gives the same result, but it's often a bit faster, because the former forces the processor to perform a division, whereas the second one is a simple bitwise AND. We grab the last bit, and that's all.

In reply to Re^2: Pack uneven length hex by Anonymous Monk
in thread Pack uneven length hex by melez

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