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# this is bad...
#
...
}

do_something(1.2);

use v5.14;
use warnings;
...
   DBI->connect("dbi:SQLite:dbname=myapp.sqlite"),
   '/tmp/output.txt',
);

use v5.14;
use warnings;
...
   output_file  => '/tmp/output.txt',
);
$app->do_something;