>> require "hpricot" => true >> doc = Hpricot('<p>foo1</p><p>foo2</p>') => #<Hpricot::Doc {elem <p> "foo1" </p>} {elem <p> "foo2" </p>}> >> (doc / "p").filter("p") => #<Hpricot::Elements[{elem <p> "foo1" </p>}, {elem <p> "foo2" </p>}]> >> (doc / "p").filter("a") => #<Hpricot::Elements[]> まともな使い方を思いつ…</hpricot::elements[]>