...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::parser::get
// In header: <boost/parser/tuple.hpp> template<typename T, typename U, U I> constexpr decltype(auto) get(T && x, integral_constant< U, I > i);
An accessor that returns a reference to the I
-th data member of an aggregate struct or boost::parser::tuple
.