Re: [Boost-users] Graph: create_subgraph not defined

30 Jun 2010


      On Jun 29, 2010, at 3:13 PM, Trevor Harmon wrote:
...
I'm also getting compiler errors when calling add_vertex. Example:
#include 
#include 
using namespace boost;
class MyGraph :
  public subgraph > > {
};
int main(int,char*[]) {
  MyGraph g;
  std::string v;
  add_vertex(v, g);
  return 0;
}
I think the problem here is that I'm trying to use  
MutablePropertyGraph's specialization of add_vertex, which takes a  
property as the first parameter, while subgraph's version of  
add_vertex takes a descriptor as the first parameter. Therefore I can  
work around the problem by first adding the vertex (without any  
properties). I can then attach the property to the vertex in a second  
step. Example:

#include 
#include 

using namespace boost;

class MyGraph :
	public subgraph > > {
};

int main(int,char*[]) {
	MyGraph g;
	std::string v;
	graph_traits<MyGraph>::vertex_descriptor descriptor = add_vertex(g);
	g[descriptor] = v;
	return 0;
}

Trevor