>> require "hpricot" => true >> doc = Hpricot('<p>foo1</p><p>foo2</p>') => #<Hpricot::Doc {elem <p> "foo1" </p>} {elem <p> "foo2" </p>}> >> doc.replace_child(doc.at('p'), doc.search('p')[1]) => [{elem <p> "foo2" </p>}] >> doc => #<Hpricot::Doc {elem <p> "foo2" </p>} {elem <p> "foo2" </p>}>