[Boost-users] BGL compile error 4

6 Jun 2007

      Aaron Windsor <aaron.windsor <at> gmail.com> writes:

<snip>
...
My point in the previous email is that your graph doesn't have any
interior properties, but you're trying to access vertex properties -
this is what's causing the compile-time error. So, for instance, if
you added any bundled vertex property:
struct vertex_properties { int label; };
void Foo()
{
   typedef boost::adjacency_list<boost::vecS, boost::listS,
boost::undirectedS, vertex_properties> graph_t;
   graph_t graph;
   graph_t::vertex_descriptor v = add_vertex(graph);
   graph[v];
}
It should compile.
Regards,
Aaron
Yes this compiles. So I switched back too my original code, and then it does 
not compile:

namespace boost
{
    enum vertex_HVERTEX_t { vertex_HVERTEX = 127 };
    BOOST_INSTALL_PROPERTY(vertex, HVERTEX);
}

void Foo()
{
    typedef boost::property<boost::vertex_HVERTEX_t, int> prop_t;
    typedef boost::adjacency_list<boost::vecS, boost::listS, 
boost::undirectedS, prop_t> graph_t;
    graph_t graph;

    graph_t::vertex_descriptor v = add_vertex(graph);
    graph[v]; 
}

So some structs are more equal than other structs (since both boost::property 
as your vertex_properties are structures)?

Wkr,
me

[Boost-users] BGL compile error 4

gast128