anchor.diff:          this.$outer$ceylon$language$List$Patch = $outer$ceylon$language$List$Patch;
           this.$capture$$iter = $capture$$iter;
           this.$capture$$patchIter = $capture$$patchIter;
  -        _$index = Integer.nativeValue(-Integer.instance(1));
  +        _$index = -1;
       }
       $dart$core.int _$index;
       $dart$core.Object next() {
  
positive.code:                     return element$131;
                  } else {
                      $dart$core.int index = _$hash(element, _$store.size);
                      ElementEntry entry = _$store.get(Integer.instance(index)) as ElementEntry;
                      {
                          $dart$core.bool doElse$132 = true;
                          if (!(null == entry)) {
  
negative.code:     if (digitIndex == 0) {
          return null;
      } else {
          return (($dart$core.int $lhs$) => null == $lhs$ ? -result : $lhs$)(negative ? result : null);
      }
  }
  
  