OK, thanks. Now how do I declare a graph that does not allow parallel edges?
---------- Forwarded message ---------- From: moritz Hilger <
moritz.hilger@gmail.com> Date: Sep 7, 2006 2:18 AM Subject: Re: [Boost-users] Why am I not hearing that my edge has already been added? To: boost-users@lists.boost.org
The problem is that add_edge() never clears boolvar - it is
always true, even when I coerce redundant edges, as in the following
code:
the problem is that your graph allows parallel edges, therefor the
adding always succeeds. you would have to check for existing edges via
out_edges(va).
cheers,
moritz