Select Code to Download

use strict;
use warnings;
...
    $unique{$_} = undef for @_;
    return keys %unique;
}

          Rate   Grep    For UtilsH    Map UtilsM
Grep    5068/s     --    -0%    -6%   -22%   -63%
...
UtilsH  5410/s     7%     7%     --   -17%   -61%
Map     6502/s    28%    28%    20%     --   -53%
UtilsM 13863/s   174%   174%   156%   113%     --