[Boost-users] [BGL]adjacency_list_traits does not define edges_size_type

Hello, The class adjacency_list_traits provides an alternate method for accessing the types of edge_descriptor and vertex_descriptor, with out this we'd run into a problem with mutually recursive types. I need to know the order in which edges are added to the vertices of my graph. To do that I intend to stamp each edge with an (increasing) integral number as it is added to the graph. It seems to me the stamp's type should be edges_size_type, but that's not available via adjacency_list_traits. Should it be? Can it be? Thanks, Louis.