[Lemon-user] declaration error

[Alpár Jüttner]

Hi,
> 
> in another namespace
> 
> 
> class xyz{
> public:
> typedef lemon::ListDigraph NetworkGraph;
> 
> 
> private:
> NetworkGraph network_graph;
> lemon::ListDigraph::ArcMap<int> weight_map(network_graph);
> 
In C++, the constructor parameters of a nested class must be given at
the parent class constructor definition, like this:

class xyz{
public:
  typedef lemon::ListDigraph NetworkGraph;

private:
  NetworkGraph network_graph;
  lemon::ListDigraph::ArcMap<int> weight_map;

public:
  xyz() : weight_map(network_graph)
  {
    ...
  }
};

Regards,
Alpar