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std::experimental::nullopt(3) C++ Standard Libarystd::experimental::nullopt(3)

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::experimen-
       tal::nullopt_t that
	  is used to indicate optional type with uninitialized state.

See also
	  nullopt_t		    indicator of optional type with uninitial-
       ized state
	  (library fundamentals	TS) (class)

http://cppreference.com		  2022.07.31	 std::experimental::nullopt(3)

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