anchor.diff:    return integer.toSigned(32) ^ mask;
   }
   
  -//
  -// String.dart
  -//
  +/////////////////////////////////////////////////
  +//
  +// ceylon.language::String
  +//
  +/////////////////////////////////////////////////
   
   class String extends impl$BaseCharacterList implements Summable, Comparable {
     final $dart$core.String _value;
  
positive.code: 
  final $package$impl$reach = null;
  
  ///////////////////////////////////////
  //
  // Callable & Flatten
  //
  ///////////////////////////////////////
  
  class dart$Callable implements dart$$Object, $dart$core.Function, Callable {
    final $dart$core.Function _function;
  
negative.code:   $dart$core.int get hashCode => char.hashCode;
  }
  
  /////////////////////////////////////////////////
  //
  // ceylon.language::Float
  //
  /////////////////////////////////////////////////
  
  class Float implements dart$$Object, Number, Exponentiable {
    final $dart$core.double _value;
  