[Boost-users] Problem with bundled BGL properties

Subject: [Boost-users] Problem with bundled BGL properties
From: alev mutlu (koor230_at_[hidden])
Date: 2014-10-21 13:34:26

Hi all,

I am new to BGL and the followings are snippets from my code. When I
compile my code I get the following error.

Any suggestions,

error: no match for ‘operator=’ in
‘city_name.boost::vec_adj_list_vertex_property_map<Graph, GraphPtr,
ValueType, Reference, Tag>::operator[] [with Graph =
boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS, relation,
boost::property<boost::edge_name_t, std::basic_string<char,
std::char_traits<char>, std::allocator<char> >, boost::no_property>,
boost::no_property, boost::listS>, GraphPtr =
boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS, relation,
boost::property<boost::edge_name_t, std::basic_string<char,
std::char_traits<char>, std::allocator<char> >, boost::no_property>,
boost::no_property, boost::listS>*, ValueType =
boost::detail::error_property_not_found, Reference =
boost::detail::error_property_not_found&, Tag = boost::vertex_name_t](v1) =
r’
/home1/mutlu/boost/include/boost-1_37/boost/pending/detail/property.hpp:21:
note: candidates are: boost::detail::error_property_not_found&
boost::detail::error_property_not_found::operator=(const
boost::detail::error_property_not_found&)

struct argument{

int is_variable;
string value;

};

struct relation{
     string relation_name;
     vector<argument> arguments;
};

typedef property<edge_name_t, std::string> EdgeNameProperty;
typedef adjacency_list<vecS, vecS, directedS, relation, EdgeNameProperty>
Graph;

int main(){

Graph g;
property_map<Graph, vertex_name_t>::type city_name = get(vertex_name, g);
property_map<Graph, edge_name_t>::type edge_value = get(edge_name, g);

typedef graph_traits<Graph>::vertex_descriptor Vertex;
typedef graph_traits<Graph>::edge_descriptor Edge;

Vertex v1;

v1 = add_vertex(g);
city_name[v1]= r;

}

 error: no match for ‘operator=’ in
‘city_name.boost::vec_adj_list_vertex_property_map<Graph, GraphPtr,
ValueType, Reference, Tag>::operator[] [with Graph =
boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS, relation,
boost::property<boost::edge_name_t, std::basic_string<char,
std::char_traits<char>, std::allocator<char> >, boost::no_property>,
boost::no_property, boost::listS>, GraphPtr =
boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS, relation,
boost::property<boost::edge_name_t, std::basic_string<char,
std::char_traits<char>, std::allocator<char> >, boost::no_property>,
boost::no_property, boost::listS>*, ValueType =
boost::detail::error_property_not_found, Reference =
boost::detail::error_property_not_found&, Tag = boost::vertex_name_t](v1) =
r’
/home1/mutlu/boost/include/boost-1_37/boost/pending/detail/property.hpp:21:
note: candidates are: boost::detail::error_property_not_found&
boost::detail::error_property_not_found::operator=(const
boost::detail::error_property_not_found&)