inspect (FasterCSV)

    # File lib/faster_csv.rb, line 1667
      def inspect
        str = "<##{self.class} io_type:"
        # show type of wrapped IO
        if    @io == $stdout then str << "$stdout"
        elsif @io == $stdin  then str << "$stdin"
        elsif @io == $stderr then str << "$stderr"
        else                      str << @io.class.to_s
        end
        # show IO.path(), if available
        if @io.respond_to?(:path) and (p = @io.path)
          str << " io_path:#{p.inspect}"
        end
        # show other attributes
        %w[ lineno     col_sep     row_sep
            quote_char skip_blanks encoding ].each do |attr_name|
          if a = instance_variable_get("@#{attr_name}")
            str << " #{attr_name}:#{a.inspect}"
          end
        end
        if @use_headers
          str << " headers:#{(@headers || true).inspect}"
        end
        str << ">"
      end