if v.is_a?(String)
            self[k] = v.smartcast
          elsif v.is_a?(Hash)
            puts "call Hash new from Hash"
            self[k] = Exg::Hash.new(v)
          elsif v.is_a?(Array)
            puts "call Array new from Hash"
            self[k] = Exg::Array.new(v)
          elsif v.is_a?(Cflip::Exg::Hash)
            self[k] = v
          elsif v.is_a?(Cflip::Exg::Array)
            self[k] = v
          else
            puts "what in Hash? #{v.class}"
            self[k] = v
          end