RhodeCode

  };

  template <typename Graph, typename Enable = void>

  struct EdgeNumTagIndicator {

    static const bool value = false;

  };

  };

  template <typename Graph, typename Enable = void>

  struct FindEdgeTagIndicator {

    static const bool value = false;

  };

    }

    typedef True NodeNumTag;

    typedef True EdgeNumTag;

    int nodeNum() const { return _node_num; }

    }

    typedef True FindEdgeTag;

    Edge findEdge(Node u, Node v, Edge prev = INVALID) const {

      return prev != INVALID ? INVALID : edge(u, v);

    }

    typedef True NodeNumTag;

    typedef True ArcNumTag;

    int nodeNum() const { return _node_num; }

    static Arc arcFromId(int id) { return Arc(id);}

    typedef True FindEdgeTag;

    Edge findEdge(Node u, Node v, Edge prev = INVALID) const {

      if (prev != INVALID) return INVALID;

      : nodes(_g.nodes), arcs(_g.arcs) { }

    typedef True NodeNumTag;

    int nodeNum() const { return nodes.size(); }

    int arcNum() const { return arcs.size(); }