[Boost-users] Creating a property map inside Dijkstra Visitor

28 Jun 2007


      Good afternoon,

Inside a dijkstra visitor I would like to change the edge weights at 
some point, so in my visitor I'm trying to make a property map called 
weight :
...
template<class DynamicMap>
   class gds_visitor : public dijkstra_visitor<>
   {
   public:
gds_visitor(DynamicMap input):dynamic(input){}
....
template <class Edge, class Graph>
   void examine_edge (Edge e, Graph& g) {
       typename property_map<Graph, edge_weight_t>::type weight;
       weight=get(edge_weight, g);
std::cout << "An edge is being examined..." << "\n";
   }
protected:
   DynamicMap dynamic;
   };
where Graph:
...
typedef adjacency_list<listS, vecS, directedS, no_property, 
property<edge_weight_t, int> > Graph;
and Edge:
...
typedef std::pair<int, int> Edge;
But it is not  compiling, mentioning a problem with weight 'soperator = .

Thank you in advance,
Jonas Gabriel