Boost C++ Libraries

dijkstra_visitor<EventVisitorList>

This class is an adapter that converts a list of EventVisitor's (constructed using std::pair) into a DijkstraVisitor.

Example

This is an excerpt from examples/dave.cpp where the copy_graph single-event visitor is used to create a copy the shortest-paths search-tree calculated by Dijkstra's algorithm.

boost::dijkstra_shortest_paths
  (G, vertex(a, G), 
   distance_map(make_iterator_property_map(distance.begin(), vertex_id, distance[0])).
   predecessor_map(make_iterator_property_map(parent.begin(), vertex_id, parent[0])).
   visitor(make_dijkstra_visitor(copy_graph(G_copy, on_examine_edge()))));

Model of

Dijkstra Visitor

Template Parameters

Parameter	Description	Default
`EventVisitorList`	A list of EventVisitor's created with `std::pair`.	`null_visitor`

Where Defined

boost/graph/dijkstra_shortest_paths.hpp

Member Functions

This class implements all of the member functions required by DijkstraVisitor. In each function the appropriate event is dispatched to the EventVisitor's in the EventVisitorList.

Non-Member Functions

Function	Description
`template <class EventVisitorList> dijkstra_visitor<EventVisitorList> make_dijkstra_visitor(EventVisitorList ev_list);`	Returns the event visitor list adapted to be a Dijkstra Visitor.