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
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
boost::proto::as_expr — A function that wraps non-Proto expression types in Proto terminals and leaves Proto expression types alone.
// In header: <boost/proto/traits.hpp> template<typename T> typename proto::result_of::as_expr< T >::type as_expr(T & t); template<typename T> typename proto::result_of::as_expr< T const >::type as_expr(T const & t); template<typename Domain, typename T> typename proto::result_of::as_expr< T, Domain >::type as_expr(T & t); template<typename Domain, typename T> typename proto::result_of::as_expr< T const, Domain >::type as_expr(T const & t);
The proto::as_expr() function returns Proto expression
objects that are suitable for storage in a local variable. It turns non-Proto objects
into Proto terminals. Its behavior is domain-specific. By default,
non-Proto types are wrapped by value (if possible) in a new Proto terminal expression,
and objects that are already Proto expressions are returned by value.
If Domain is not explicitly specified, it is assumed to
be proto::default_domain
See proto::domain::as_expr<>
Returns: |
typename Domain::template as_expr< T >()(t) |