my %freq = ();
my @unique = grep { !$freq{$_}++ } @arr;

You may be interested in List::MoreUtils::uniq:
    use List::MoreUtils qw(uniq);
    my @unique = uniq @arr;

Give a man a fish:  <%-(-(-(-<

In reply to Re^8: Remove similar key=value pair from HOH by AnomalousMonk
in thread Remove similar key=value pair from HOH by vaibhav07

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