std::optional::reset

 

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std::optional

Member functions

optional::optional

optional::~optional

optional::operator=

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optional::operator->optional::operator*

optional::operator booloptional::has_value

optional::value

optional::value_or

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optional::emplace

optional::swap

optional::reset

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

make_optional

swap

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hash

nullopt_t

in_place_t

bad_optional_access

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nullopt

in_place

 

void reset() noexcept;		(since C++17)

If *this contains a value, destroy that value as if by value().T::~T(). Otherwise, there are no effects.

*this does not contain a value after this call.

See also

operator=

assigns contents (public member function)