And what is the problem with the same key appearing more than once in case the index is (ordered/hashed)_non_unique index? From: Boost-users [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Uthpal Urubail Sent: Thursday, June 04, 2015 12:22 PM To: boost-users@lists.boost.org Subject: [Boost-users] boost multi_index_container with composite_key iterator Experts, Is there a better approach to iterator over boost multiindex composite key? The issue with the below approach is, the same key is appearing multiple times. typedef multi_index_container loadTable_Def; loadTable_Def pb; //! for(loadTable_Def::iterator i=pb.begin(),i_end=pb.end();i!=i_end; ) { // Get the range of the current key loadTable_Def::iterator iter_next=pb.upper_bound(pb.key_extractor()(*i)); do { loadTable_Def::iterator it1,it2; boost::tie(it1,it2) = pb.equal_range(boost::make_tuple(<passing multiple key >)); while(it1 != it2) { //std::cout<<"print values"<<" ,"; ++it1; } } while(++i!=iter_next); } Regards, UJ [Read More]http://feeds.feedburner.com/~r/sizmek-blog/~6/1 [http://www.sizmek.com/Sizmek.png]http://www.sizmek.com/