Hello. I uploaded a new version of the junction comparison of ranges to boost sandbox file vault ( flos_junction_v6.zip ). When find it useful or you have critism on the implementation tell it to me. There is still the naming problem, i don't want call them junctions. Has anyone an idea? A short description of the usage, because the example is more something like a test (to much macros): #include<junction.hpp> using namespace boost; ... set<int> a; vector<int> b; // fill a and b with values if( any_of( a ) >= all_of( b ) ) { ... } ... There are four functions for creating junction-objects from a range: any_of, all_of, one_of and none_of and you can compre the objects with one of the comparion operators (==,!=,<,<=,>,>=). You also can use something different when you write: any_of( a ).do_comparison( <Function object>, all_of( b ) ); The function object exspected is bool(element_type,element_type) wheather element_type is the type of a range element. I also plan to implement something more similar to the perl junctions as a extension of set-container. Who is interested? I think this needs more discussion about the client interface and the implementation as the comparisons. Sincerly Florian.