anchor.diff:  
     Sequential sort([Callable c]) {
       var newList = _list.toList();
  -    newList.sort(c.$delegate$);
  +    newList.sort(dartComparator(c));
       return new ArraySequence(new Array._withList(newList));
  +  }
  +
  +  void sortInPlace([Callable c]) {
  +    _list.sort(dartComparator(c));
     }
   
     @$dart$core.override
  
positive.code:   $dart$core.String toString() => _value.toString();
  
    Character get character => new Character.$fromInt(_value);
  
    $dart$core.bool equals($dart$core.Object other) {
      if (other is Integer) {
  
negative.code:   Integer times([Integer other]) => new Integer(this._value * other._value);
  
    Integer get negated => new Integer(-this._value);
    Integer get magnitude => new Integer(this._value.abs());
    Integer minus([Integer other]) => new Integer(this._value - other._value);
  
    Integer plus([Integer other]) => new Integer(this._value + other._value);
  