std::experimental::make_observer - cppreference.com
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    std::experimental::make_observer

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    Library fundamentals v2
     
    std::experimental::observer_ptr
     
    Defined in header <experimental/memory> 
    template< class W >
std::experimental::observer_ptr<W> make_observer( W* p ) noexcept;
    		(library fundamentals TS v2)

    Creates an observer_ptr object, deducing the template argument from the type of the function argument.

    Parameters

    p - pointer to the object to be watched by the observer_ptr object

    Return value

    A observer_ptr object, created as if by std::experimental::observer_ptr<W>(p).

    Example