...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::algorithm::is_iless — case insensitive version of is_less
// In header: <boost/algorithm/string/compare.hpp> struct is_iless { // construct/copy/destruct is_iless(const std::locale & = std::locale()); // public member functions template<typename T1, typename T2> bool operator()(const T1 &, const T2 &) const; };