std::allocator<T>::construct (3) - Linux Manuals

std::allocator<T>::construct: std::allocator<T>::construct


std::allocator<T>::construct - std::allocator<T>::construct


Defined in header <memory>
void construct( pointer p, const_reference val ); (1) (until C++11)
template< class U, class... Args > (since C++11)
void construct( U* p, Args&&... args ); (2) (deprecated in C++17)
                                                      (removed in C++20)

Constructs an object of type T in allocated uninitialized storage pointed to by p, using placement-new
1) Calls new((void *)p) T(val)
2) Calls ::new((void *)p) U(std::forward<Args>(args)...)


p - pointer to allocated uninitialized storage
val - the value to use as the copy constructor argument
args... - the constructor arguments to use

Return value


See also

construct constructs an object in the allocated storage
               (function template)
               allocation functions
operator_new (function)