Re: [Boost-users] hash function for edge_descriptor

From: Wolfram Koska (koskaw_at_[hidden])
Date: 2005-08-09 15:18:13

>>  Well, the big question for me is could I use
>> this as my hash, too?
>
> Well, yes, you could. However, by using the source and target for your
> hash function you can be sure that it will work for *all* BGL graphs,
> whereas accessing "m_property" in the edge descriptor will only work
> for some graphs.

Thank you very much for your help, Doug! I have only one last question: for 
which graphs will this not work? It seems to work for me, and I will most 
probably not change the graph I am using (a directed adjacency_list). Will 
it not work for graphs with edges without properties? I can't quite believe 
this... maybe it will not work for adjacency_matrix ?

Again, thanks very much! Regards,
Wolfram Koska