std::uninitialized_construct_using_allocator
Defined in header <memory> |
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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
See also
|
(C++11)
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checks if the specified type supports uses-allocator construction (class template) |
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(C++20)
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creates an object of the given type by means of uses-allocator construction (function template) |
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