std::pmr::polymorphic_allocator::new_object(3)

NAME
std::pmr::polymorphic_allocator::new_object - std::pmr::polymorphic_allocator::new_object

Synopsis
   template< class U, class... CtorArgs > (since C++20)
   [[nodiscard]] U* new_object( CtorArgs&&... ctor_args );
   Allocates and constructs an object of type U.
   Given alloc is a std::pmr::polymorphic_allocator<T>:
 U* p = alloc.new_object<U>(std::forward<CtorArgs>(ctor_args)...);
   is equivalent to
 U* p = alloc.allocate_object<U>();
 try
 {
     alloc.construct(p, std::forward<CtorArgs>(ctor_args)...);
 }
 catch (...)
 {
     alloc.deallocate_object(p);
     throw;
 }

Parameters
   ctor_args - the arguments to forward to the constructor of U

Return value
   A pointer to the allocated and constructed object.

Notes
   This function was introduced for use with the fully-specialized allocator
   std::pmr::polymorphic_allocator<>, but it may be useful in any specialization as a
   shortcut to avoid having to rebind from std::pmr::polymorphic_allocator<T> to
   std::pmr::polymorphic_allocator<U>, and having to call allocate, construct, and
   deallocate individually.
   Since U is not deduced, it must be provided as a template argument when calling this
   function.

Exceptions
   May throw any exceptions thrown by the call to allocate_object or the constructor of
   U.

See also
   allocate_bytes allocate raw aligned memory from the underlying resource
   (C++20) (public member function)
   allocate_object allocates raw memory suitable for an object or an array
   (C++20) (public member function)
   allocate allocate memory
                   (public member function)
   allocate allocates uninitialized storage using the allocator
   [static] (public static member function of std::allocator_traits<Alloc>)
   allocate allocates memory
                   (public member function of std::pmr::memory_resource)