std::weak_ptr<T>:: operator=

weak_ptr & operator = ( const weak_ptr & r ) noexcept ;	(1)	(since C++11)
template < class Y > weak_ptr & operator = ( const weak_ptr < Y > & r ) noexcept ;	(2)	(since C++11)
template < class Y > weak_ptr & operator = ( const shared_ptr < Y > & r ) noexcept ;	(3)	(since C++11)
weak_ptr & operator = ( weak_ptr && r ) noexcept ;	(4)	(since C++11)
template < class Y > weak_ptr & operator = ( weak_ptr < Y > && r ) noexcept ;	(5)	(since C++11)

Replaces the managed object with the one managed by r . The object is shared with r . If r manages no object, * this manages no object too.

Parameters

r

-

smart pointer to share an object with

Return value

* this

Notes

The implementation may meet the requirements without creating a temporary weak_ptr object.

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 2315	C++11	move semantic was not enabled for weak_ptr	enabled

See also

(constructor)	creates a new weak_ptr (public member function)
swap	swaps the managed objects (public member function)