# File lib/spreadsheet/column.rb, line 21 def updater *keys keys.each do |key| unless instance_methods.include? "unupdated_#{key}=" alias_method "unupdated_#{key}=""unupdated_#{key}=", "#{key}=""#{key}=" define_method "#{key}=" do |value| send "unupdated_#{key}=", value @worksheet.column_updated @idx, self if @worksheet value end end end end