Hashes have very fast processing speeds. Using them for finding unique values of an array like this will work nicely, and very fast even over larger files.

I recently had to do something similar for a project, and the hash solution worked nicely, and the speed was blazing in comparison to my original 'nested looping' solution.

In reply to Re: Re: duplicate lines in array by mcogan1966
in thread duplicate lines in array by harry34

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