world-modules

---- perl
package World;
use Moose;

sub greet {
    my $self = shift;
    print "Hello, world\n";
}

1;
---- python
class World:
    def greet(self):
        print "Hello, world\n",
---- ruby
class World
    def greet
        puts("Hello, world\n")
        return
    end
end
---- php
<?php

class World {
    public function greet() {
        print("Hello, world\n");
    }
}

?>
---- js
(this.World = function() {}).prototype = {
    greet: function() {
        print("Hello, world");
    }
};
---- java
package org.cdent;

public class World {
    public void greet() {
        System.out.print("Hello, world\n");
    }
}