Re: [Boost-users] [BGL] Edge descriptors for parallel edges

On 11/10/05, Slava wrote:

Say, i have the following structure for edge bundle properties

struct EdgeProperty { int edge_type; }

and i can add parallel edges, that is between vertices u and v cab be several edges with bundle property EdgeProperty with different edge_types.

the first question how can i use edge(u,v,graph) function if it returns std::pair , only one descriptor? but i have several descriptors between two vertices.

use out_edges(u, g) or/and in_edges(v, g) if you want all edge between u and v

second, how to change the edge_type provided that i got edge_descriptor from edge(u,v,graph)

with a property map: get(&EdgeProperty::edge_type, g) or access directly: g[e].edge_type But we can find these answere in the boost documentation...

Thanks.

Welcome. -- Johan