graph default_dfs_visitor Sınıfı

Örnek
Şöyle yaparız.

class my_dfs_visitor: public boost::default_dfs_visitor
{
public:
  template<typename Vertex, typename Graph>
  void discover_vertex(Vertex u, const Graph & g) const
  {
    std::cout << "at " << u << std::endl;
  }
  template<typename Edge, typename Graph>
  void examine_edge(Edge e, const Graph& g) const
  {
    std::cout << "Examining edges " << e << std::endl;
  }
};