Hi
I am not sure I understand your program.
But I know I do the same thing to check for existence of edges however I
use edge_descriptor (and I work on a directed graph) instead
edge_descriptor_type:
typedef typename
boost::graph_traits::edge_descriptor_type edge;
I did not know that there was anything called an edge_descriptor_type ??
Does this help??
g++ often give strange error messages.
Best regards
Line R.
-----Original Message-----
From: boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of David A.
Greene
Sent: 31. august 2007 02:48
To: boost-users@lists.boost.org
Subject: [Boost-users] [Graph] edge() not working
[Apologies if this has been asked before. Gmane is down and Google
didn't
return anything interesting.]
I have a Boost (1.34.1) Graph declared like this:
typedef boost::adjacency_list my_graph_type;
I want to find out if an edge is in the graph:
typedef typename boost::graph_traits::
edge_descriptor_type edge;
edge e;
bool present;
boost::tie(e, present) = edge(v1, v2, my_graph);
Unfortunately, g++ 4.1.2 doesn't like it:
error: no matching function for call to
boost::detail::edge_desc_impl::edge_desc_impl(void* const&, void* const&,
boost::adjacency_list&)
boost-1_34_1/boost/graph/detail/edge.hpp:43: note: candidates are:
boost::detail::edge_desc_impl::edge_desc_impl(Vertex,
Vertex, const void*) [with Directed = boost::undirected_tag, Vertex =
void*]
boost-1_34_1/boost/graph/detail/edge.hpp:41:
note: boost::detail::edge_desc_impl::edge_desc_impl() [with Directed = boost::undirected_tag, Vertex
=
void*]
boost/graph/detail/edge.hpp:35:
note:
boost::detail::edge_desc_impl::edge_desc_impl(const
boost::detail::edge_desc_impl&)
Has anyone else run into this problem before? How does a reference to
the
graph get passed to edge_desc_impl's constructor?
Thanks.
-Dave
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