[boost] Re: Graph concepts

From: jsiek_at_[hidden]
Date: 1999-12-11 20:08:55

jsiek_at_[hidden] writes:
 > 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.

But probably the best option of all is:

pair<bool,E> fe = edge(v,v,g)