>... so what if elements aren't unique?

since this question hasn't been answered yet here a variation for finding the first idx!

%pos= map { $_=>$i++ } reverse @input;

[download]

If you need it more than once, then the overhead for building a hash will easily pay off.

Cheers Rolf

In reply to Re^2: Get Position of Element in an array by LanX
in thread Get Position of Element in an array by Anonymous Monk

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