Re: [Boost-users] [BGL] Graph of an Iterator

On Thu, 20 May 2010, Hossein Haeri wrote:

Dear all,

Is there any way to deduce the graph a graph-iterator is iterating over? So, for example for:

typedef graph_type::vertex_iterator iterator; iterator begin, end; tie(begin, end) = vertices(g);

is there anything like

graph_type gg = graph_of(begin);

so that gg == g?

That's not really possible, just like there is no mapping from STL iterators to their corresponding paper. In some cases (I think actually most of them), the vertex iterators of a graph don't have a reference to the graph at all. -- Jeremiah Willcock