... that $seen{$vk}++ technique.

This is the technique on which List::Util::uniq() and related functions are based. (uniq() originally appeared in List::MoreUtils, but was duplicated into the core List::Util at some point.)

Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Removing doubles and printing only unique values by AnomalousMonk
in thread Removing doubles and printing only unique values by zarath

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