ruby - Get node name with REXML -

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i have xml, can like

<?xml version="1.0" encoding="utf-8"?> <testnode type="1">123</testnode>

or like

<?xml version="1.0" encoding="utf-8"?> <othernode attrib="true">other value</othernode>

or root node can unexpected. (theoretically anything.) i'm using rexml parse it. how can find out xml node root element?

xml = rexml::document.new "<?xml version" #etc (or load file) root_node = xml.elements[1] root_node_name = root_node.name

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