On 6/6/07, gast128 <gast128@hotmail.com> wrote:
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
Hi, You're mixing the older interior graph properties with the syntax for accessing bundled properties. If you use bundled properties, you can access them with the [] operators, but you can't access the old-style interior graph properties that way. You can read more about bundled properties here: http://www.boost.org/libs/graph/doc/bundles.html and the older interior properties are documented here: http://www.boost.org/libs/graph/doc/using_adjacency_list.html#sec:adjacency-... Regards, Aaron