If you want to use a custom key type, specialize this struct for it and give it a 'type' typedef that specifies your path type. More...
#include <ptree_fwd.hpp>
If you want to use a custom key type, specialize this struct for it and give it a 'type' typedef that specifies your path type.
The path type must conform to the Path concept described in the documentation. This is already specialized for std::basic_string.