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std::weak_ptr::operator=

From cppreference.com
< cpp‎ | memory‎ | weak ptr
 
 
 
Dynamic memory management
Uninitialized storage
(C++17)
(deprecated since c++17)
(deprecated since c++17)
(deprecated since c++17)
Garbage collection support
Miscellaneous
(C++11)
(C++11)
C Library
Low level memory management
 
 
weak_ptr& operator=( const weak_ptr& r );
(1) (since C++11)
template< class Y >
weak_ptr& operator=( const weak_ptr<Y>& r );
(2) (since C++11)
template< class Y >
weak_ptr& operator=( const shared_ptr<Y>& r );
(3) (since C++11)
weak_ptr& operator=( weak_ptr&& r );
(4) (since C++14)
template< class Y >
weak_ptr& operator=( weak_ptr<Y>&& r );
(5) (since C++14)

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.

1-3) Equivalent to std::weak_ptr<T>(r).swap(*this).
4,5) Equivalent to std::weak_ptr<T>(std::move(r)).swap(*this).

Contents

[edit] Parameters

r - smart pointer to share an object with

[edit] Return value

*this

[edit] Exceptions

noexcept specification:  
noexcept
  

[edit] Notes

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

[edit] See also

creates a new weak_ptr
(public member function) [edit]
swaps the managed objects
(public member function) [edit]