...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::unit_test::data::monomorphic::singleton::iterator
// In header: <boost/test/data/monomorphic/singleton.hpp> struct iterator { // construct/copy/destruct explicit iterator(singleton< T > const *); // public member functions sample const & operator*() const; void operator++(); };