std::nullopt (3) - Linux Man Pages

std::nullopt: std::nullopt

NAME

std::nullopt - std::nullopt

Synopsis


Defined in header <optional>
inline constexpr nullopt_t nullopt{/*unspecified*/}; (since C++17)


std::nullopt is a constant of type std::nullopt_t that is used to indicate optional type with uninitialized state.

See also


nullopt_t indicator of optional type with uninitialized state
          (class)
(C++17)