Searched defs:is_optional (Results 1 – 3 of 3) sorted by relevance
151 struct is_optional : public std::false_type struct155 struct is_optional<std::optional<T>> : public std::true_type struct159 struct is_optional<const std::optional<T>> : public std::true_type struct163 struct is_optional<std::optional<T>&> : public std::true_type struct167 struct is_optional<const std::optional<T>&> : public std::true_type struct
9 def is_optional(feature, d): function
2882 def is_optional(self): member in Choice