Header <boost/signal_network/component/filter.hpp>


SIGNAL_NETWORK_DEFAULT_OUT

namespace boost {
  namespace signals {
    struct combined;
    struct unfused;
    struct fused;

    template<typename Signature, typename Combiner, typename Group, 
             typename GroupCompare> 
      class filter<Signature, unfused, Combiner, Group, GroupCompare>;
    template<typename Signature, typename Combiner, typename Group, 
             typename GroupCompare> 
      class filter<Signature, combined, Combiner, Group, GroupCompare>;
    template<typename Signature, typename Combiner, typename Group, 
             typename GroupCompare> 
      class filter<Signature, fused, Combiner, Group, GroupCompare>;
  }
}