Re: [Boost-users] [BGL] getting an edge_descriptor of a reverse_graph

3 Jan 2012

      On 23/12/2011 14:44, Jeremiah Willcock wrote:
...
On Thu, 22 Dec 2011, Alex Hagen-Zanker wrote:
...
I hope I am right in using detail::reverse_graph_edge_property_map as 
a reversed edge wrapper around my existing edge_property_maps. For 
use with some property maps it did require me to add a default 
constructor and const reference operator[](key) const {} though.
The reverse_graph_edge_property_map class is in fact internal; see the 
documentation for how to get that map in an "official" way.
Could you maybe point me to the right place in the documentation?

I have a function that has a graph and a property map(with edge 
descriptors as keys) as arguments. Depending on a third argument it 
either acts on the graph or the reverse graph:

template
void foo(G& graph, E edgemap, bool doReverse) {
     if(doReverse)
         return foo( make_reverse_graph(graph),  
make_reverse_map(edgemap), false);
     else
        // do something with graph and edgemap
}

For make_reverse_map I now use detail::reverse_graph_edge_property_map 
and I would be happy to use an "official" equivalent.

Thanks, Alex