[Lemon-user] use of graph in class

[Alpar Juttner]

Hi,

> The code below does not compile, because I've put these functions in a
> class
> ( error: ‘g’ is not a type )
> 
> 
> #include <lemon/smart_graph.h>
> using namespace lemon;
> class myclass {
>   SmartGraph g;
>   SmartGraph::NodeMap<int> m(g);
> };

There is nothing LEMON specific here. If you want to pass parameters to
a constructor of a class member, you must do it in the constructor of
the main class. It is done in the following way:

class myclass {
   SmartGraph g;
   SmartGraph::NodeMap<int> m;
 public:
   myclass() : m(g) {}
 };

Regards,
Alpar