anchor.diff:    }
   }
   
  -//
  -// Tuple.dart
  -//
  +/////////////////////////////////////////////////
  +//
  +// ceylon.language::Tuple
  +//
  +/////////////////////////////////////////////////
   
   Tuple tupleTrailing(Iterable initial, $dart$core.Object element)
     =>  new Tuple.$trailing(initial, element);
  
positive.code:   return integer.toSigned(32) ^ mask;
  }
  
  //
  // String.dart
  //
  
  class String extends impl$BaseCharacterList implements Summable, Comparable {
    final $dart$core.String _value;
  
negative.code:   dart$VariableBoxString($dart$core.String this.v);
  }
  
  /////////////////////////////////////////////////
  //
  // Unimplemented
  //
  /////////////////////////////////////////////////
  
  class serialization$NativeDeque implements dart$$Basic {
    void pushFront(element) {}
  