...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::icl::inplace_plus
// In header: <boost/icl/functors.hpp> template<typename Type> struct inplace_plus : public boost::icl::identity_based_inplace_combine< Type > { // types typedef inplace_plus< Type > type; // public member functions void operator()(Type &, const Type &) const; // public static functions static void version(Type &); };