...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::none_of_equal
// In header: <boost/algorithm/cxx11/none_of.hpp> template<typename Range, typename V> bool none_of_equal(const Range & r, const V & val);