Re: [Boost-users] [BGL] Bundled properties and property maps

Subject: Re: [Boost-users] [BGL] Bundled properties and property maps
From: Alex Brooks (a.brooks_at_[hidden])
Date: 2008-11-18 19:37:29

> Gotta a const Graph also:
>
> property_map<const Graph, double const EdgeProp::*>

This line compiles now, but I get a new compile error from the astar_search 
line.  The important bits are:

    typedef boost::property_map<const Graph, double const EdgeProp::*>::type 
EdgeWeightMap; 
    EdgeWeightMap edgeWeightMap = get(&EdgeProp::cost, graph);

    std::vector<VertexRef> predecessors(num_vertices(graph));
    astar_search( graph,
                  start,
                  aStarHeuristic,
                  boost::weight_map(edgeWeightMap).
                  predecessor_map(&predecessors[0]).
                  visitor(aStarVisitor) );

The error is:

/usr/include/c++/4.3/bits/allocator.h:84:   instantiated 
from 'std::allocator<const double>'
/usr/include/c++/4.3/bits/stl_vector.h:75:   instantiated 
from 'std::_Vector_base<const double, std::allocator<const double> >'
/usr/include/c++/4.3/bits/stl_vector.h:176:   instantiated 
from 'std::vector<const double, std::allocator<const double> >'
/usr/include/boost/graph/astar_search.hpp:360:   instantiated from 'void 
boost::detail::astar_dispatch1(VertexListGraph&, typename 
boost::graph_traits<G>::vertex_descriptor, AStarHeuristic, CostMap, 
DistanceMap, WeightMap, IndexMap, ColorMap, const Params&) [with 
VertexListGraph = const boost::adjacency_list<boost::vecS, boost::vecS, 
boost::undirectedS, Point*, EdgeProp, boost::no_property, boost::listS>, 
AStarHeuristic = AStarHeuristic, CostMap = 
boost::detail::error_property_not_found, DistanceMap = 
boost::detail::error_property_not_found, WeightMap = 
boost::bundle_property_map<const boost::adjacency_list<boost::vecS, 
boost::vecS, boost::undirectedS, Point*, EdgeProp, boost::no_property, 
boost::listS>, boost::detail::edge_desc_impl<boost::undirected_tag, unsigned 
int>, EdgeProp, const double>, IndexMap = 
boost::vec_adj_list_vertex_id_map<boost::property<boost::vertex_bundle_t, 
Point*, boost::no_property>, unsigned int>, ColorMap = 
boost::detail::error_property_not_found, Params = 
boost::bgl_named_params<AStarVisitor, boost::graph_visitor_t, 
boost::bgl_named_params<unsigned int*, boost::vertex_predecessor_t, 
boost::bgl_named_params<boost::bundle_property_map<const 
boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, Point*, 
EdgeProp, boost::no_property, boost::listS>, 
boost::detail::edge_desc_impl<boost::undirected_tag, unsigned int>, EdgeProp, 
const double>, boost::edge_weight_t, boost::no_property> > >]'
/usr/include/boost/graph/astar_search.hpp:394:   instantiated from 'void 
boost::astar_search(VertexListGraph&, typename 
boost::graph_traits<G>::vertex_descriptor, AStarHeuristic, const 
boost::bgl_named_params<P, T, R>&) [with VertexListGraph = const 
boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, Point*, 
EdgeProp, boost::no_property, boost::listS>, AStarHeuristic = AStarHeuristic, 
P = AStarVisitor, T = boost::graph_visitor_t, R = 
boost::bgl_named_params<unsigned int*, boost::vertex_predecessor_t, 
boost::bgl_named_params<boost::bundle_property_map<const 
boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, Point*, 
EdgeProp, boost::no_property, boost::listS>, 
boost::detail::edge_desc_impl<boost::undirected_tag, unsigned int>, EdgeProp, 
const double>, boost::edge_weight_t, boost::no_property> >]'
/home/a.brooks/shh/src/libs/prm/test/stupid.cpp:83:   instantiated from here
/usr/include/c++/4.3/ext/new_allocator.h:82: error: 'const _Tp* 
__gnu_cxx::new_allocator<_Tp>::address(const _Tp&) const [with _Tp = const 
double]' cannot be overloaded
/usr/include/c++/4.3/ext/new_allocator.h:79: error: with '_Tp* 
__gnu_cxx::new_allocator<_Tp>::address(_Tp&) const [with _Tp = const double]'

Any other ideas?

Thanks again,

Alex