std::uninitialized_construct_using_allocator

< cpp‎ | memory
Defined in header <memory>
template< class T, class Alloc, class... Args >
constexpr T* uninitialized_construct_using_allocator( T* p, const Alloc& alloc, Args&&... args );
 (since C++20)

Creates an object of the given type T by means of uses-allocator construction at the uninitialized memory location indicated by p

Equivalent to

return std::apply([&]<class... Xs>(Xs&&...xs) {
        return std::construct_at(p, std::forward<Xs>(xs)...);
    }, std::uses_allocator_construction_args<T>(alloc, std::forward<Args>(args)...));

Parameters

p - the memory location where the object will be placed.
alloc - the allocator to use.
args - the arguments to pass to T's constructor

Return value

Pointer to the newly-created object of type T

Exceptions

May throw any exception thrown by the constructor of T, typically including std::bad_alloc

Example

This section is incomplete
Reason: no example

See also

(C++11)
 checks if the specified type supports uses-allocator construction
(class template)
(C++20)
 creates an object of the given type by means of uses-allocator construction
(function template)