perldoc common::sense
NAME
    common::sense - save a tree AND a kitten, use common::sense!

SYNOPSIS
     use common::sense;

     # supposed to be the same, with much lower memory usage, as:
     #
     # use utf8;
     # use strict qw(vars subs);
     # use feature qw(say state switch);
     # no warnings;
     # use warnings qw(FATAL closed threads internal debugging pack
     #                 portable prototype inplace io pipe unpack malloc
     #                 deprecated glob digit printf layer
     #                 reserved taint closure semicolon);
     # no warnings qw(exec newline unopened);