Well, the Description for the module explicitly tells us two things:

  1. the functions are fairly trivial
  2. their efficiency is due to their implementation in C
All of the below functions are implementable in only a couple of lines of Perl code. Using the functions from this module however should give slightly better performance as everything is implemented in C. The pure-Perl implementation of these functions only serves as a fallback in case the C portions of this module couldn't be compiled on this machine.

I'm deducing from the description that the Perl implementations aren't really intended to be that efficient.

In reply to Re^5: Remove Duplicates from Array by mpeever
in thread Remove Duplicates from Array by jpk236

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