Re: [Boost-users] multi_index_container for composite key

Uthpal Urubail escribió:

Thanks for the reply.. Let me put my requirement more clear. I want to loop through and get all the element Ids[ member] which are having the same member values[pid, orientX, orientY, orientZ, OffsetA and OffsetB]. I am expecting the count of the container to give the count of unique member entries.

I think this is what you're after: for(beambook::iterator iter=pb.begin(),i_end=pb.end();iter!=i_end;){ beambook::iterator iter_next=pb.upper_bound(pb.key_extractor()(*iter)); // the bunch of elements in [iter,iter_next) have the same // [pid,orientX,orientX,orientZ,OffsetA,OffsetB] do{ // print eid or whatever }while(++iter!=iter_next); } Joaquín M López Muñoz Telefónica, Investigación y Desarrollo