each

Iterates over nodes that match the given path, calling the supplied block with the match.

element

The context element

path

The xpath to search for. If not supplied or nil, defaults to '*'

namespaces

If supplied, a Hash which defines a namespace mapping

variables

If supplied, a Hash which maps $variables in the query to values. This can be used to avoid XPath injection attacks or to automatically handle escaping string values.

XPath.each( node ) { |el| ... }
XPath.each( node, '/*[@attr='v']' ) { |el| ... }
XPath.each( node, 'ancestor::x' ) { |el| ... }
XPath.each( node, '/book/publisher/text()=$publisher', {}, {"publisher"=>"O'Reilly"}) \
  {|el| ... }