How do you create a Perl module?

Question

How do you write a module for Perl? In Python you can use:

# module.py
def helloworld(name):
    print \"Hello, %s\" % name

# main.py
import module
module.         


        

Answer 1

The most traditional way of setting up a module is as follows:

package Foo::Bar;
our @ISA       = qw(Exporter);       # Tells perl what to do with...
our @EXPORT    = qw(sub1 sub2 sub3); # automatically exported subs
our @EXPORT_OK = qw(sub4 sub5);      # exported only when demanded

# code for subs, constants, package variables here

1;  # Doesn't actually have to be 1, just a 'true' value.

and as others have said, you can use it like so:

use Foo::Bar;