std::experimental:: static_pointer_cast, std::experimental:: dynamic_pointer_cast, std::experimental:: const_pointer_cast, std::experimental:: reinterpret_pointer_cast

template < class T, class U > std:: experimental :: shared_ptr < T > static_pointer_cast ( const std:: experimental :: shared_ptr < U > & r ) noexcept ;	(1)	(library fundamentals TS)
template < class T, class U > std:: experimental :: shared_ptr < T > dynamic_pointer_cast ( const std:: experimental :: shared_ptr < U > & r ) noexcept ;	(2)	(library fundamentals TS)
template < class T, class U > std:: experimental :: shared_ptr < T > const_pointer_cast ( const std:: experimental :: shared_ptr < U > & r ) noexcept ;	(3)	(library fundamentals TS)
template < class T, class U > std:: experimental :: shared_ptr < T > reinterpret_pointer_cast ( const std:: experimental :: shared_ptr < U > & r ) noexcept ;	(4)	(library fundamentals TS)

Creates a new instance of std::experimental::shared_ptr whose stored pointer is obtained from r 's stored pointer using a cast expression. If r is empty, so is the new shared_ptr (but its stored pointer is not necessarily null).

Otherwise, the new shared_ptr will share ownership with r , except that it is empty if the dynamic_cast performed by dynamic_pointer_cast returns a null pointer.

Let Y be typename std:: experimental :: shared_ptr < T > :: element_type , then the resulting std::experimental::shared_ptr 's stored pointer will be obtained by calling (in respective order):

The behavior of these functions is undefined unless the corresponding cast from U* to T* is well formed:

Parameters

r

-

the pointer to convert

Example

This section is incomplete Reason: no example

See also

(constructor)	constructs new shared_ptr (public member function)
static_pointer_cast dynamic_pointer_cast const_pointer_cast reinterpret_pointer_cast (C++17)	applies static_cast , dynamic_cast , const_cast , or reinterpret_cast to the stored pointer (function template)