RhodeCode

    /// @{

    /// Readable map concept

    template<typename K, typename T>

    class ReadMap

    {

      /// Returns the value associated with a key.

      ///

      Value operator[](const Key &) const {return Value();}

    /// Writable map concept

    template<typename K, typename T>

    class WriteMap

    {

      };

    };

    template<typename K, typename T>

    class ReadWriteMap : public ReadMap<K,T>,

			    public WriteMap<K,T>

    };

    template<typename K, typename T, typename R, typename CR>

    class ReferenceMap : public ReadWriteMap<K,T>

    {

      ///Returns a reference to the value associated to a key.

      Reference operator[](const Key &) { return tmp; }

      ///Returns a const reference to the value associated to a key.

      /// Sets the value associated with a key.

      void set(const Key &k,const Value &t) { operator[](k)=t; }

      template<typename _ReferenceMap>

      struct ReferenceMapConcept {

    // @}

  } //namespace concepts

} //namespace lemon

#endif // LEMON_CONCEPT_MAPS_H