gistfile1.txt

$dns_hosts = [{
    'title' => 'test-1a-record.testme.puppetlabs.net',
    'parameters' => {
      "domain"=>"testme.puppetlabs.net",
      "ddns_key"=>"/etc/bind/keys.d/dhcp_updater",
      "customername"=>"puppetlabs",
      "ttl"=>"4800", "provider"=>"bind",
      "username"=>"puppetlabs",
      "content"=>"172.16.100.150",
      "type"=>"A",
      "ensure"=>"present",
    },
  },]

  each($dns_hosts) |$record| {
    $record_title = $record['title']
    $record_params = $record['parameters']
    $hash_variables = { "$record_title" => $record_params }
    $hash_hash = { "${record['title']}" => $record['parameters'] }
    notify { "A hash built from variables ${hash_variables}": }
    notify { "A hash built from a hash ${hash_hash}": }
#  notify { "${hash_variables}": }
#  notify { "${hash_hash}": }
    #notify { $record_title: message => $record['parameters'] }
    #notify { $record['title']: message => $record['parameters'] }
  }