What I meant is something like this, in which case you can have any number of arrays with any number of rows: 

my $all_val = [];
for my $aref (@$array_ref_x) {
    my $i = 0;
    for my $row (@$aref) {
        $all_val->[$i] = '' unless defined $all_val->[$i];  # for 'use
+ warnings'
        $all_val->[$i] = $row if $row gt $all_val->[$i];
        $i++;
    }
}

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In reply to Re^3: Keeping Unique Elements in Array! by almut
in thread Keeping Unique Elements in Array! by Anonymous Monk

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