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std::optional<T>::~optional

From cppreference.com
< cpp‎ | utility‎ | optional
 
 
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~optional();
(since C++17)
(until C++20)
constexpr ~optional();
(since C++20)

If the object contains a value and the type T is not trivially destructible (see std::is_trivially_destructible), destroys the contained value by calling its destructor, as if by value().T::~T().

Otherwise, does nothing.

[edit] Notes

If T is trivially-destructible, then this destructor is also trivial, so std::optional<T> is also trivially-destructible.

[edit] Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
P2231R1 C++20 the destructor was not constexpr while non-trivial destructors can be constexpr in C++20 made constexpr