How can I define global functions in Perl5?

Here is example code to use Path::Class' file() function everywhere.

use Path::Class;
use Carp ();
sub UNIVERSAL::AUTOLOAD {
    if ($UNIVERSAL::AUTOLOAD =~ /::file\z/) {
        return Path::Class::file(@_);
    }
    Carp::croak("Undefined subroutine &$UNIVERSAL::AUTOLOAD called");
}
sub UNIVERSAL::DESTROY { }

Published: 2013-01-23(Wed) 00:53