std::auto_ptr<T>::operator= (3) - Linux Manuals

std::auto_ptr<T>::operator=: std::auto_ptr<T>::operator=


std::auto_ptr<T>::operator= - std::auto_ptr<T>::operator=


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


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



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.