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std::auto_ptr::auto_ptr(3) C++ Standard Libary std::auto_ptr::auto_ptr(3) NAME std::auto_ptr::auto_ptr - std::auto_ptr::auto_ptr Synopsis explicit auto_ptr( X* p = 0 ) throw(); (1) (deprecated in C++11) (removed in C++17) auto_ptr( auto_ptr& r ) throw(); (2) (deprecated in C++11) (removed in C++17) template< class Y > (3) (deprecated in C++11) auto_ptr( auto_ptr<Y>& r ) throw(); (removed in C++17) auto_ptr( auto_ptr_ref<X> m ) throw(); (4) (deprecated in C++11) (removed in C++17) Constructs the auto_ptr from a pointer that refers to the object to manage. 1) Constructs the auto_ptr with pointer p. 2) Constructs the auto_ptr with the pointer held in r. r.release() is called to acquire the ownership of the object. 3) Same as (2). Y* must be implicitly convertible to T*. 4) Constructs the auto_ptr with the pointer held in the auto_ptr in- stance referred to by m. p.release() is called for the auto_ptr p that m holds to acquire the ownership of the object. auto_ptr_ref is an implementation-defined type that holds a refer- ence to auto_ptr. std::auto_ptr is implicitly convertible to and assignable from this type. The implementation is allowed to provide the template with a different name or implement equivalent functionality in other ways. Parameters p - a pointer to an object to manage r - another auto_ptr to transfer the ownership of the object from m - an implementation-defined type that holds a reference to auto_ptr Notes The constructor and the copy assignment operator from auto_ptr_ref is provided to allow copy-constructing and assigning std::auto_ptr from nameless temporaries. Since its copy constructor and copy assignment operator take the argument as non-const reference, they cannot bind rvalue arguments directly. However, a user-defined conversion can be executed (which releases the original auto_ptr), followed by a call to the constructor or copy-assignment operator that take auto_ptr_ref by value. This is an early implementation of move semantics. http://cppreference.com 2022.07.31 std::auto_ptr::auto_ptr(3)
NAME | Synopsis | Parameters | Notes
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