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  1. or download this
    $used_once = "some value";
$used_once;                 # void context, does nothing
  2. or download this
    use EmeraldWarp::DBI;         # instead of requiring it
our $database = "whatever";
...

my $dbh = new EmeraldWarp::DBI($database);  # or just "whatever" and o
+mit $database entirely
...