Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is an older version of Boost and was released in 2022. The current version is 1.89.0.
boost::icl::map::on_definedness<Type, true>
// In header: <boost/icl/map.hpp> template<typename Type> struct on_definedness<Type, true> { // public static functions static void add_intersection(Type &, const Type &, const element_type &); };