[boost] graph property bug

From: jsiek_at_[hidden]
Date: 2000-10-15 13:30:05

Hi Krishna,

I think you just need to explicitly create an object of type LayerPlugin.

 int main ()
 {
    Graph g (LayerPlugin(999));
    cout << num_vertices (g) << endl; // prints 999 instead of zero.
    return 0;
 }

Krishna Padmasola writes:
 > Hi Jeremy,
 > 
 > I am defining a graph property which is of type int. I am supplying an
 > int argument to the constructor, which is getting interpreted as the
 > number of vertices rather than the graph property.
 > 
 > The constructor 2 (see below) is getting called rather than constructor
 > 1.
 > 
 > Is there a fix/workaround?
 > 
 > Thanks in advance,
 > Krishna.
 > 
 > 1. inline adjacency_list(const GraphProperty& p = GraphProperty()) 
 >       : m_property(p) { }
 > 
 > 2. inline adjacency_list(vertices_size_type num_vertices, 
 >                           const GraphProperty& p = GraphProperty())
 >       : Base(num_vertices), m_property(p) { }
 > 
 > the following does not work:
 > 
 > enum vertex_Node_t {vertex_Node = 200};
 > enum edge_Edge_t {edge_Edge = 201};
 > enum graph_Layer_t {graph_Layer = 202};
 > namespace boost {
 >     BOOST_INSTALL_PROPERTY(vertex, Node);
 >     BOOST_INSTALL_PROPERTY(edge, Edge);
 >     BOOST_INSTALL_PROPERTY(graph, Layer);
 > }
 > 
 > typedef property<vertex_Node_t, string> VertexPlugin;
 > typedef property<edge_Edge_t, string> EdgePlugin;
 > typedef property<graph_Layer_t, int> LayerPlugin;
 > 
 > 
 > typedef adjacency_list <listS, listS, bidirectionalS,
 >             VertexPlugin, EdgePlugin, LayerPlugin> Graph;
 > 
 > int main ()
 > {
 >    Graph g (999); // does not initialize the graph property with 999.
 >    cout << num_vertices (g) << endl; // prints 999 instead of zero.
 >    return 0;
 > }
 > 
 > 
 > 
 >