each_array_element

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 1261
      def each_array_element(object, filter, &block)
        case object
        when Array
          object.grep(Parameters).filter_map(&block)
        when Parameters
          if object.nested_attributes? && !specify_numeric_keys?(filter)
            object.each_nested_attribute(&block)
          end
        end
      end