...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::histogram::axis::circular — Regular axis with circular option already set.
// In header: <boost/histogram/axis/regular.hpp> template<typename Value = double, typename MetaData = use_default, typename Options = use_default> class circular { };