anchor.diff:                          return false;
                   }
                   return true;
  -            default:
  -                return false;
  +            default: return false;
           }
       }
   
  
positive.code:     operator /(other) {
          num result;
          other = toNum(other);
          if (_value is double || other is double)
              result = _value / other;
          else
  
negative.code:     return new $PyDict(dict);
  }
  
  abs(n) => (n < 0) ? (n * -1) : n;
  
  all(iterable) {
      for (var i in iterable) {
  