Searched defs:optional_attribute (Results 1 – 1 of 1) sorted by relevance
228 struct optional_attribute struct230 typedef T const& type;232 static type call(T const& val) in call()237 static bool is_valid(T const&) in is_valid()244 struct optional_attribute<boost::optional<T> > struct246 typedef T const& type;248 static type call(boost::optional<T> const& val) in call()253 static bool is_valid(boost::optional<T> const& val) in is_valid()