boost::static_visitor — Convenient base type for static visitors.
// In header: <boost/variant/static_visitor.hpp> template<typename ResultType> class static_visitor { public: // types typedef ResultType result_type; // Exposes result_type member as required by StaticVisitor concept. };
Denotes the intent of the deriving class as meeting the
requirements of a static visitor of some type. Also exposes the
inner type result_type
as required by the
StaticVisitor
concept.
Notes:
static_visitor
is intended for use as a base type only
and is therefore noninstantiable.