# File lib/compass/compiler.rb, line 153
    def timed(timed_thing = lambda {|res| res})
      start_time = Time.now
      res = yield
      end_time = Time.now
      has_duration = timed_thing.call(res)
      has_duration.instance_variable_set("@__duration", end_time - start_time)
      def has_duration.__duration
        @__duration
      end
      res
    end