std::auto_ptr<T>::operator=

auto_ptr& operator=( auto_ptr& r ) throw();	(1)	(deprecated in C++11) (removed in C++17)
template< class Y > auto_ptr& operator=( auto_ptr<Y>& r ) throw();	(2)	(deprecated in C++11) (removed in C++17)
auto_ptr& operator=( auto_ptr_ref m ) throw();	(3)	(deprecated in C++11) (removed in C++17)

Replaces the managed object with the one managed by r.

1) Effectively calls reset(r.release()).

2) Effectively calls reset(r.release()). Y* must be implicitly convertible to T*.

3) Effectively calls reset(m.release()). auto_ptr_ref is an implementation-defined type that holds a reference to auto_ptr. std::auto_ptr is implicitly convertible to and from this type. The implementation is allowed to provide the template with a different name or implement equivalent functionality in other ways.

Parameters

r	-	another `auto_ptr` to transfer the ownership of the object from
m	-	an implementation-defined type that holds a reference to `auto_ptr`

Return value

*this.

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.

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