Joaquín, My question is: Can I define container like below? typedef multi_index_container< ElemShell*, indexed_by< //non-unique as some might have more than ids ordered_non_unique< composite_key< ElemShell*, member<ElemShell,int,&ElemShell::N1>, member<ElemShell,int,&ElemShell::N2>, member<ElemShell,int,&ElemShell::N3>, member<ElemShell,int,&ElemShell::N4> > >, ordered_unique< member<GeneralElement,int,&GeneralElement::EID> > >
beambook;
When I retrieve, beambook::iterator it=(pb.find(boost::make_tuple(obj->N1,obj->N2,obj->N3,node4))); int val = (*it)->N4; Application is crashing. About: If you use ordered_unique then there cannot be two elements with the same node[0], node[1], node[2] values. Its TRUE. Two elements cannot have same node[0], node[1], node[2] values. How should be the container? Thanks, Uthpal