The sort keys %seen offered here would render the outputs sorted, not in the order they were originaly found. This may or may not be suitable.

You can either keep a separate array of all unique items in the order discovered, or you can look at Tie::IxHash for an already-bundled solution.

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[ e d @ h a l l e y . c c ]

In reply to Re: Re: Separate duplicate and unique records by halley
in thread Separate duplicate and unique records by wsee

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