compiled_filter

# File actionpack/lib/action_dispatch/http/parameter_filter.rb, line 25
      def compiled_filter
        @compiled_filter ||= begin
          regexps, blocks = compile_filter

          lambda do |original_params|
            filtered_params = {}

            original_params.each do |key, value|
              if regexps.find { |r| key =~ r }
                value = FILTERED
              elsif value.is_a?(Hash)
                value = filter(value)
              elsif value.is_a?(Array)
                value = value.map { |v| v.is_a?(Hash) ? filter(v) : v }
              elsif blocks.present?
                key = key.dup
                value = value.dup if value.duplicable?
                blocks.each { |b| b.call(key, value) }
              end

              filtered_params[key] = value
            end

            filtered_params
          end
        end
      end