anchor.diff:    }
   
     void _httpRequestHandler(HttpRequest req) {
  -    print('${req.method} ${req.uri.path}');
  +    print('${new DateTime.now()}  '
  +          '${req.method} ${req.uri.path}');
   
       for (final String urlRegex in this.urls.keys) {
         RegExp exp = new RegExp('^${urlRegex}\$');
  
positive.code: 
    void info() {
      // print information (for debugging)
      print('server running at http://${HOST}:${PORT}/');
      print('HOST: ${HOST}');
      print('PORT: ${PORT}');
  
negative.code:       print('${key} => ${value}');
      });
      print(this.runtimeType.toString());
      print('--- end of starting server ---');
    }
  
    void run() {
  