typename graph_traits<Graph>::edge_descriptor
weighted_random_out_edge(Graph& g, typename graph_traits<Graph>::vertex_descriptor src, WeightMap weight, RandomNumGen& gen) {
typedef graph_traits<Graph> gt;
typedef typename gt::vertex_descriptor vertex_descriptor;
typedef typename property_traits<WeightMap>::value_type weight_type;
weight_type weight_sum(0);
BGL_FORALL_OUTEDGES_T(src, e, g, Graph) {weight_sum += get(weight, e);}
int main()
{
int a = weight_sum(1, 2, 3, 4, 5, 6);
return a;
}
