Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
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boost::proto::result_of::as_env —
Metafunction for computing the return type of proto::as_env().
// In header: <boost/proto/transform/env.hpp> template<typename T> struct as_env : boost::result_of<proto::functional::as_env(T)> { };