NAME

std::experimental::nullopt - std::experimental::nullopt

Synopsis

Defined in header <experimental/optional>
constexpr nullopt_t nullopt{/*unspecified*/}; (library fundamentals TS)

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

See also

nullopt_t indicator of optional type with uninitialized state
(library fundamentals TS) (class)