A explicit function for traversing all vertices connected via an edge to a
fixed vertex.

That's exactly what the adjacency_iterator is for.

http://www.boost.org/doc/libs/1_39_0/libs/graph/doc/AdjacencyGraph.html
http://www.boost.org/doc/libs/1_39_0/libs/graph/doc/adjacency_iterator.html
 
Andrew Sutton
andrew.n.sutton@gmail.com