...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::yap::transform
// In header: <boost/yap/algorithm.hpp> template<typename Expr, typename Transform, typename... Transforms> constexpr decltype(auto) transform(Expr && expr, Transform && transform, Transforms &&... transforms);