< cpp‎ | memory
Dynamic memory management
Uninitialized storage
(deprecated since c++17)
(deprecated since c++17)
(deprecated since c++17)
Garbage collection support
C Library
Low level memory management
Defined in header <memory>
template< class ForwardIt >
void destroy( ForwardIt first, ForwardIt last );
(1) (since C++17)
template< class ExecutionPolicy, class ForwardIt >
void destroy( ExecutionPolicy&& policy, ForwardIt first, ForwardIt last );
(2) (since C++17)
1) Destroys the objects in the range [first, last), as if by
for (; first != last; ++first)
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.


[edit] Parameters

first, last - the range of elements to destroy
policy - the execution policy to use. See execution policy for details.
Type requirements
ForwardIt must meet the requirements of ForwardIterator.
No increment, assignment, comparison, or indirection through valid instances of ForwardIt may throw exceptions.

[edit] Return value


[edit] Complexity

Linear in the distance between first and last.

[edit] Exceptions

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 three 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.

[edit] Possible implementation

template< class ForwardIt >
void destroy( ForwardIt first, ForwardIt last )
  for (; first != last; ++first)

[edit] Example

[edit] See also

destroys a number of objects in a range
(function template) [edit]
destroys an object at a given address
(function template) [edit]