std::auto_ptr

 

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std::auto_ptr

Member functions

auto_ptr::auto_ptr

auto_ptr::~auto_ptr

auto_ptr::operator=

auto_ptr::operator*auto_ptr::operator->

auto_ptr::get

auto_ptr::release

auto_ptr::reset

auto_ptr::operator auto_ptr<Y>auto_ptr::operator auto_ptr_ref<Y>

 

Defined in header <memory>
template< class T > class auto_ptr;	(1)	(until C++17) (deprecated since C++11)
template<> class auto_ptr<void>;	(2)	(until C++17) (deprecated since C++11)

auto_ptr is a smart pointer that manages an object obtained via new expression and deletes that object when auto_ptr itself is destroyed. It may be used to provide exception safety for dynamically-allocated objects, for passing ownership of dynamically-allocated objects into functions and for returning dynamically-allocated objects from functions.

Copying an auto_ptr copies the pointer and transfers ownership to the destination: both copy construction and copy assignment of auto_ptr modify their right hand arguments, and the "copy" is not equal to the original. Because of these unusual copy semantics, auto_ptr may not be placed in standard containers. std::unique_ptr is preferred for this and other uses. (since C++11)

2) Specialization for type void is provided, it declares the typedef element_type, but no member functions.

An additional class template auto_ptr_ref is referred to throughout the documentation. It is an implementation-defined type that holds a reference to auto_ptr. The implementation is allowed to provide the template with a different name or implement the functions returning it or accepting it as parameter in other ways.

Member types

Member type	Definition
element_type	T

Member functions

(constructor)	creates a new auto_ptr (public member function)
(destructor)	destroys an auto_ptr and the managed object (public member function)
operator=	transfers ownership from another auto_ptr (public member function)
operator auto_ptr<Y>operator auto_ptr_ref<Y>	converts the managed pointer to a pointer to different type (public member function)
Observers
get	returns a pointer to the managed object (public member function)
operator*operator->	accesses the managed object (public member function)
Modifiers
reset	destroys the managed object (public member function)
release	releases ownership of the managed object (public member function)