Namespaces
Variants
Views
Actions

std::allocator_traits<Alloc>::destroy

From cppreference.com
 
 
Dynamic memory management
Uninitialized storage
Garbage collection support
Miscellaneous
(C++20)
(C++11)
(C++11)
C Library
Low level memory management
 
 
Defined in header <memory>
template< class T >
static void destroy( Alloc& a, T* p );
(since C++11)
(until C++20)
template< class T >
static constexpr void destroy( Alloc& a, T* p );
(since C++20)

Calls the destructor of the object pointed to by p. If possible, does so by calling a.destroy(p). If not possible (e.g. Alloc does not have the member function destroy()), then calls the destructor of *p directly, as p->~T() (until C++20)std::destroy_at(p) (since C++20).

Contents

[edit] Parameters

a - allocator to use for destruction
p - pointer to the object being destroyed

[edit] Return value

(none)

[edit] Notes

Because this function provides the automatic fall back to direct call to the destructor, the member function destroy() is an optional Allocator requirement since C++11.

[edit] See also

(deprecated in C++17)(removed in C++20)
destructs an object in allocated storage
(public member function of std::allocator<T>) [edit]