equal
  deleted
  inserted
  replaced
  
    
    
    24   | 
    24   | 
    25 namespace lemon { | 
    25 namespace lemon { | 
    26   | 
    26   | 
    27   /// \brief Dummy type to make it easier to create invalid iterators.  | 
    27   /// \brief Dummy type to make it easier to create invalid iterators.  | 
    28   ///  | 
    28   ///  | 
         | 
    29   /// Dummy type to make it easier to create invalid iterators.  | 
    29   /// See \ref INVALID for the usage.  | 
    30   /// See \ref INVALID for the usage.  | 
    30   struct Invalid { | 
    31   struct Invalid { | 
    31   public:  | 
    32   public:  | 
    32     bool operator==(Invalid) { return true;  } | 
    33     bool operator==(Invalid) { return true;  } | 
    33     bool operator!=(Invalid) { return false; } | 
    34     bool operator!=(Invalid) { return false; } |