Have you looked at the common way of eliminating duplicates, as shown by perldoc -q duplicate, available online in perlfaq4 ("How can I remove duplicate elements from a list or array")? What part of it is slow?

In reply to Re: What is the fastest way to delete duplicates from multi dimensional array ? by Corion
in thread What is the fastest way to delete duplicates from multi dimensional array ? by geogpx

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