Re: [Boost-users] PropertyGraphConcept concept checking errors for an example implicit graph

Subject: Re: [Boost-users] PropertyGraphConcept concept checking errors for an example implicit graph
From: Jeremiah Willcock (jewillco_at_[hidden])
Date: 2010-06-25 09:55:49

On Thu, 24 Jun 2010, W.P. McNeill wrote:

> How do I "specialize boost::property_map directly"? Â This might be the key to the problem. Â 
> 
> My current shot in the dark is to try:
> template<>
> struct boost::property_map<ImplicitRingGraph, boost::edge_weight_t> {
> typedef EdgeWeightMap type;
> typedef EdgeWeightMap const_type;
> };
> 
> which gives me the error
> 
> implicit.hpp:116: error: specialization of ‘template<class Graph, class Property> struct boost::property_map’ in different namespace
> /opt/local/include/boost/graph/properties.hpp:244: error:   from definition of ‘template<class Graph, class Property> struct boost::property_map’

You need to do:

namespace boost {
   template <>
   struct property_map<ImplicitRingGraph, boost::edge_weight_t> {
     ...
   };
}

-- Jeremiah Willcock