std::destroy (3) - Linux Man Pages
Defined in header <memory>
template< class ForwardIt > (1) (since C++17)
void destroy( ForwardIt first, ForwardIt last );
template< class ExecutionPolicy, class ForwardIt > (2) (since C++17)
void destroy( ExecutionPolicy&& policy, ForwardIt first, ForwardIt last );
1) Destroys the objects in the range [first, last), as if by
2) Same as (1), but executed according to policy. This overload does not participate in overload resolution unless std::is_execution_policy_v<std::decay_t<ExecutionPolicy>> is true.
ForwardIt must meet the requirements of LegacyForwardIterator.
No increment, assignment, comparison, or indirection through valid instances of ForwardIt may throw exceptions.
Linear in the distance between first and last.
The overload with a template parameter named ExecutionPolicy reports errors as follows:
* If execution of a function invoked as part of the algorithm throws an exception and ExecutionPolicy is one of the standard_policies, std::terminate is called. For any other ExecutionPolicy, the behavior is implementation-defined.
* If the algorithm fails to allocate memory, std::bad_alloc is thrown.
The following example demonstrates how to use destroy to destroy a contiguous sequence of elements.
// Run this code
destroy_n destroys a number of objects in a range
destroy_at destroys an object at a given address