std::experimental::weak_ptr - cppreference.com
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    std::experimental::weak_ptr

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    std::experimental::weak_ptr
     
    Defined in header <experimental/memory> 
    template< class T > class weak_ptr;
    		(library fundamentals TS)

    std::experimental::weak_ptr is a modified version of std::weak_ptr that interoperates with std::experimental::shared_ptr and has support for arrays.

    Member types

    Member type Definition
    element_type std::remove_extent_t<T>

    Member functions

    		 constructs new weak_ptr
    (public member function) [edit]

    Members and non-members identical to std::weak_ptr

    Member functions

    The following member functions work with std::experimental::shared_ptr instead of std::shared_ptr and std::experimental::weak_ptr instead of std::weak_ptr. The behavior is otherwise identical.

    		destroys a weak_ptr
    (public member function of std::weak_ptr<T>) [edit]
    		assigns the weak_ptr
    (public member function of std::weak_ptr<T>) [edit]
    Modifiers
    		releases the ownership of the managed object
    (public member function of std::weak_ptr<T>) [edit]
    		swaps the managed objects
    (public member function of std::weak_ptr<T>) [edit]
    Observers
    		returns the number of shared_ptr objects that manage the object
    (public member function of std::weak_ptr<T>) [edit]
    		checks whether the referenced object was already deleted
    (public member function of std::weak_ptr<T>) [edit]
    		creates a shared_ptr that manages the referenced object
    (public member function of std::weak_ptr<T>) [edit]
    		provides owner-based ordering of weak pointers
    (public member function of std::weak_ptr<T>) [edit]

    Non-member functions

    This non-member function is declared in the std::experimental namespace, and work with std::experimental::weak_ptr rather than std::weak_ptr, but otherwise behaves identically to the corresponding C++14 function.

    (C++11)
    		 specializes the std::swap algorithm
    (function template) [edit]

    Example