Re: [Boost-users] How to delete all vertices and edges in BGL

Hi Guys, On Jul 12, 2005, at 8:25 AM, Douglas Gregor wrote:

The major problem here is that you shouldn't be dereferencing vertices(databaseGraph).second, because it is a past-the-end iterator. You could rewrite the loop as:

while (vertices(databaseGraph).first != vertices(databaseGraph).second) { b = *vertices(databaseGraph).first; clear_vertex(b, databaseGraph); remove_vertex(b, databaseGraph); }

But the above loop could also have problems due to vertex iterator invalidation caused by remove_vertex... it depends on the graph used.

...

Can you let me know what is the correct way of deleting all edges and vertices in a mutable property undirected graph.

The easy way is just "databaseGraph.clear()"

Yep. Cheers, Jeremy _______________________________________________ Jeremy Siek http://www.osl.iu.edu/~jsiek Ph.D. Candidate, Indiana University Bloomington C++ Booster (http://www.boost.org) _______________________________________________