# File lib/spreadsheet/row.rb, line 34
      def updater *keys
        keys.each do |key|
          ## Passing blocks to methods defined with define_method is not possible
          #  in Ruby 1.8:
          #  http://groups.google.com/group/ruby-talk-google/msg/778184912b769e5f
          #  use class_eval as suggested by someone else in
          #  http://rubyforge.org/tracker/index.php?func=detail&aid=25732&group_id=678&atid=2677
          class_eval "def \#{key}(*args)\nres = super(*args)\n@worksheet.row_updated @idx, self if @worksheet\nres\nend\n", __FILE__, __LINE__
        end
      end