[optional.ref.mod] (original) (raw)

22 General utilities library [utilities]

22.5 Optional objects [optional]

22.5.4 Partial specialization of optional for reference types [optional.optional.ref]

22.5.4.8 Modifiers [optional.ref.mod]

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constexpr void reset() noexcept;

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Effects: Assigns nullptr to val.

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Postconditions: *this does not contain a value.