...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::operator== — Compare two variants.
// In header: <boost/histogram/axis/variant.hpp> template<class... Us, class... Vs> bool operator==(const variant< Us... > & u, const variant< Vs... > & v);