boost::algorithm::is_less — is_less functor
// In header: <boost/algorithm/string/compare.hpp> struct is_less { // public member functions template<typename T1, typename T2> (, ) ; };
Convenient version of standard std::less. Operation is templated, therefore it is not required to specify the exact types upon the construction
is_less
template<typename T1, typename T2> ( Arg1, Arg2) ;
Compare two operands using > operator