to_xml agreement

to_xml

> [User.first, User.last].to_xml
# master branch
<users type="array">
 <user>
  <name>John</name>
 </user>
 <user>
  <name>Mary</name>
 </user>
</users>

# my patch branch
<objects type="array">
  <object>
    <name>raj1</name>
    <data type="yaml" nil="true"></data>
    <id type="integer">1</id>
  </object>
  <object>
    <name>raj2</name>
    <data type="yaml" nil="true"></data>
    <id type="integer">2</id>
  </object>
</objects>




# note that last item is User class
a = [10, [20, 30, ["helo", "world"]], [1.2, 1.3], {:foo => :bar}, User]

puts a.to_xml

<?xml version="1.0" encoding="UTF-8"?>
<objects type="array">
  <object type="integer">10</object>
  <object type="array">
    <object type="integer">20</object>
    <object type="integer">30</object>
    <object type="array">
      <object>helo</object>
      <object>world</object>
    </object>
  </object>
  <object type="array">
    <object type="float">1.2</object>
    <object type="float">1.3</object>
  </object>
  <object>
    <foo type="symbol">bar</foo>
  </object>
  <object>User</object>
</objects>