...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::inverse
// In header: <boost/icl/functors.hpp> template<typename Functor> struct inverse { // types typedef remove_reference< typenameFunctor::first_argument_type >::type argument_type; typedef icl::inplace_erasure< argument_type > type; };