Hi,

I'm playing with new boost library property_tree.
And I have several questions regarding it.
1) Suppose there is xml file with utf8 encoding.
What is the best way to populate it into wptree?
2) How can I save wptree into xml file with utf8 encoding. Unfortunately write_xml requires wostream.
3) Is there something like map operator[]? I.e. I need the following behavior:
wptree & something(some_path)
{
boost::optional<wptree &> child = my_tree.get_child(some_path);
    if(child)
      return child.get();
    else
      return my_tree.put_child(some_path);
}

Best Regards,
Sergei