=> as Natural
=> where { $_ < 10 };
-Moose::Util::TypeConstraints::export_type_contstraints_as_functions();
+Moose::Util::TypeConstraints->export_type_contstraints_as_functions();
is(Num(5), 5, '... this is a Num');
ok(!defined(Num('Foo')), '... this is not a Num');