Nice. A variation on the unique/duplicate stuff: 
    # Assuming @foo and @bar dont contain duplicates in themselves...
    $_{$_}++ for @foo;
    $_{$_}-- for @bar;

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The values in %_ are positive if in @foo, negative if in @bar and 0 if in both.



time was, I could move my arms like a bird and...

In reply to Re: RFC: The Uniqueness of hashes. by Ctrl-z
in thread The Uniqueness of hashes. by injunjoel

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