std::experimental::optional::~optional
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                    < cpp | experimental | optional
                    
                                                            
                    | ~optional(); | (library fundamentals TS) | |
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 val->T::~T().
Otherwise, does nothing.
[edit] Notes
If T is trivially-destructible, then this destructor is also trivial, so optional<T> is also trivially-destructible.


