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

From: Jonas Gabriel (gkamprie_at_[hidden])
Date: 2007-06-28 07:30:28

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