[boost] Re: Graph concepts

From: jsiek_at_[hidden]
Date: 1999-12-11 20:07:22

jsiek_at_[hidden] writes:
 > AdjacencyMatrix: refines both VertexListGraph and EdgeListGraph
 >   bool flag = has_edge(v,v,g)
 >   e = edge(v,v,g)
 > 

another option is to not have the has_edge() function, and
have a special value of edge descriptor for non-existent
edges.