How does scoping work in Perl modules?

Question

I don't really understand how scoping works in Perl modules. This doesn't print anything. I would like it if running a.pl printed 1

b.pm

$f=1;

a.pl

use b;

print $f

Answer 1

OK, you have a lot of misconceptions that we can best address by fixing your immediate problem and pointing you to good resources.

b.pm should be:

package b;
our $f = 1;
1;

a.pl should be

use b;
print $b::f

run the whole thing with perl -I. a.pl

Now go read perldocperlmod very carefully.

Also read perldocstrict.

Answer 2

You should start off by reading about Perl modules in the manual: perldoc perlmod at the commandline, or go to http://perldoc.perl.org/perlmod.html.