std::experimental::nullopt

 

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experimental::optional

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experimental::boyer_moore_horspool_searcherexperimental::make_boyer_moore_horspool_searcher

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std::experimental::optional

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optional::optional

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optional::operator->optional::operator*

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optional::emplace

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operator==operator!=operator<operator<=operator>operator>=

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hash

nullopt_t

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nullopt

in_place

 

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 (library fundamentals TS)

indicator of optional type with uninitialized state (class)