deprecated : (in refactory ruby ed.)

gistfile1.rb

class Module
  def deprecate(methodName, &block)
    module_eval <<-END
      alias_method :deprecated_#{methodName}, :#{methodName}
      def #{methodName}(*args, &block)
        $stderr.puts "Warning: calling deprecated method #{self}.#{methodName}."
        deprecated_#{methodName}(*args, &block)
      end
    END
  end
end