std::allocator_traits<Alloc>::destroy

 

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std::allocator_traits

Member functions

allocator_traits::allocate (哋它亢++11)

allocator_traits::allocate_at_least (哋它亢++23)

allocator_traits::deallocate (哋它亢++11)

allocator_traits::construct (哋它亢++11)

allocator_traits::destroy (哋它亢++11)

allocator_traits::max_size (哋它亢++11)

allocator_traits::select_on_container_copy_construction (哋它亢++11)

 

Defined in header <memory>
template< class T > static void destroy( Alloc& a, T* p );		(since 哋它亢++11) (until 哋它亢++20)
template< class T > static constexpr void destroy( Alloc& a, T* p );		(since 哋它亢++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 哋它亢++20)std::destroy_at(p)(since 哋它亢++20).

Parameters

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

Return value

(none)

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 哋它亢++11.

See also

destroy (until 哋它亢++20)

destructs an object in allocated storage (public member function of std::allocator<T>)