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 version of Boost is under active development. You are currently in the master branch. The current version is 1.91.0.
boost::proto::protect::impl
// In header: <boost/proto/transform/make.hpp> template<typename, typename, typename> struct impl { // types typedef PrimitiveTransform result_type; };