Hello, I want to do an range selection over an composit key but I get compiler errors like: /home/kowalke/Projects/test_multi_index/src/test_multi_index.cpp:85: instantiated from here /opt/boost/include/boost-1_34/boost/multi_index/ordered_index.hpp:978: error: no match for call to '(boost::tuples::tuple<boost::multi_index::detail::unbounded_type, bool, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>) (boost::multi_index::composite_key_result<boost::multi_index::composite_key<item, boost::multi_index::member<item, double, &item::function>, boost::multi_index::member<item, bool, &item::active>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> >)' I've appended a test app. Thanks for advice! regards, Oliver #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <algorithm> #include <iostream> #include <utility> #include <cstdlib> #include <stdexcept> #include <string> #include <boost/foreach.hpp> #include <boost/multi_index_container.hpp> #include <boost/multi_index/member.hpp> #include <boost/multi_index/ordered_index.hpp> #include <boost/multi_index/composite_key.hpp> #include <boost/lambda/lambda.hpp> namespace mi = boost::multi_index; struct item { double function; bool active; item( double function_, bool active_) : function( function_), active( active_) {} }; struct idx_tag {}; typedef mi::multi_index_container< item, mi::indexed_by< mi::ordered_unique< mi::tag< idx_tag >, mi::composite_key< item, mi::member< item, double, & item::function >, mi::member< item, bool, & item::active > >, mi::composite_key_compare< std::greater< double >, std::greater< bool > > > >

table;

typedef table::index< idx_tag >::type idx_type; int main( int argc, char *argv[]) { try { table tbl; tbl.insert( item( -1.1, true) ); tbl.insert( item( 1., true) ); tbl.insert( item( 0., true) ); tbl.insert( item( 1.1, false) ); tbl.insert( item( -1., true) ); tbl.insert( item( -1., false) ); idx_type & idx( tbl.get< idx_tag >() ); std::pair< idx_type::iterator, idx_type::iterator > p( idx.range( boost::make_tuple( mi::unbounded, true), boost::make_tuple( boost::lambda::_1 >= 0., true) ) ); for ( ; p.first != p.second; ++p.first) std::cout << p.first->function << " " << std::boolalpha << p.first->active << std::endl; return EXIT_SUCCESS; } catch ( std::exception const& e) { std::cerr << e.what() << std::endl; } catch ( ... ) { std::cerr << "unhandled exception" << std::endl; } return EXIT_FAILURE; }