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 2018. The current version is 1.89.0.
boost::proto::basic_default_generator — A simple generator that passes an expression through unchanged while stating a preference for proto::basic_expr<> over proto::expr<>.
// In header: <boost/proto/generate.hpp> struct basic_default_generator : proto::use_basic_expr< proto::default_generator > { };