Puppet codes - array and looping

Puppet codes - array and looping

It does bothering me at first when I start to code in puppet. Where is my array definition and how am I going to loop. Here is the caveat right after searching for help in the puppet user group.

This is the example.

I have declared some variables at /etc/puppet/manifests/site.pp

$all_nodes = ["node1.hiu.com", "node2.hiu.com", "node3.hiu.com", "node4.hiu.com"]

Here is the code for the looping 

define install_package_zookeeper {

        if $fqdn == "$name" {

                package { mapr-zookeeper:

                        ensure => present,

                }

        }

}

class mapr::install_zookeeper {

        install_package_zookeeper { $all_nodes:;}

}

Basiscally, here is the explanation, the define function can take the argument of array and traverse the array items as a single instance. e.g.

install_package_zookeeper { ["node1.hiu.com", "node2.hiu.com", "node3.hiu.com"] }

as like this

install_package_zookeeper {

                  "node1.hiu.com":

                  .

                  .

                  "node2.hiu.com":

                  .

                  .

                  "node3.hiu.com":

}

So, taking the puppet default behaviour of grant is actually mean to do a looping for an array. lol