std::auto_ptr::operatorauto_ptr(3)

NAME
std::auto_ptr::operatorauto_ptr - std::auto_ptr::operatorauto_ptr

Synopsis
   template< class Y > (1) (deprecated in C++11)
   operator auto_ptr_ref<Y>() throw(); (removed in C++17)
   template< class Y > (2) (deprecated in C++11)
   operator auto_ptr<Y>() throw(); (removed in C++17)
   Converts *this to an auto_ptr for a different type Y.
   1) Returns an implementation-defined type that holds a reference to *this.
   std::auto_ptr is convertible and assignable from this template. The implementation
   is allowed to provide the template with a different name or implement equivalent
   functionality in other ways.
   2) Constructs a new auto_ptr with a pointer obtained by calling release().

Parameters
   (none)

Return value
   1) An implementation-defined type that holds a reference to *this.
   2) An auto_ptr with a pointer obtained by calling release().

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 (1) or (2) 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.