It is lexically scoped, so you can wall it off with a {} block. And there's 'no integer;' to turn it off as well. It's a pattern in Perl, like "use strict;" fo

It is lexically scoped, so you can wall it off with a {} block. And there's 'no integer;' to turn it off as well. It's a pattern in Perl, like "use strict;" for example, which is also lexically scoped and has a "no strict;" counterpart.