Header <boost/signal_network/connection/slot_selector

Header <boost/signal_network/connection/slot_selector_map.hpp>

namespace boost {
  namespace signals {
    template<typename Signature, typename T> 
      struct get_slot<Signature, T, typename boost::enable_if< boost::fusion::traits::is_sequence< T > >::type>;
    template<typename T> 
      struct is_component<T, typename boost::enable_if< boost::fusion::traits::is_sequence< T > >::type>;
    template<typename T> 
      struct get_signal_type<T, typename boost::enable_if< boost::fusion::traits::is_sequence< T > >::type>;
    template<typename T> 
      struct get_signal<T, typename boost::enable_if< boost::fusion::traits::is_sequence< T > >::type>;
  }
}