std::auto_ptr

 

C++

Language

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

 

Utilities library

Type support (basic types, RTTI, type traits)

Dynamic memory management

Error handling

Program utilities

Variadic functions

Date and time

Function objects

initializer_list (C++11)

bitset

hash (C++11)

Relational operators

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

Pairs and tuples

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Swap, forward and move

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

Dynamic memory management

Low level memory management
Allocators
allocator
allocator_traits (C++11)
allocator_arg_t (C++11)
allocator_arg (C++11)
uses_allocator (C++11)
scoped_allocator_adaptor (C++11)
Uninitialized storage
uninitialized_copy
uninitialized_copy_n (C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
Smart pointers
unique_ptr (C++11)
shared_ptr (C++11)
weak_ptr (C++11)
auto_ptr (deprecated)
owner_less (C++11)
enable_shared_from_this (C++11)
bad_weak_ptr (C++11)
default_delete (C++11)
Garbage collection support
declare_reachable (C++11)
undeclare_reachable (C++11)
declare_no_pointers (C++11)
undeclare_no_pointers (C++11)
pointer_safety (C++11)
get_pointer_safety (C++11)
Miscellaneous
pointer_traits (C++11)
addressof (C++11)
align (C++11)
C Library
malloc calloc	realloc free

 

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>

 

Defined in header <memory>
template< class T > class auto_ptr;	(1)	(deprecated)
template<> class auto_ptr<void>	(2)	(deprecated)

auto_ptr is a smart pointer that manages an object obtained via new 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.

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

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>	converts the managed pointer to a pointer to different type (public member function)
Modifiers
reset	destroys the managed object (public member function)
release	releases ownership of the managed object (public member function)
Observers
get	obtains a pointer to the managed object (public member function)
operator* operator->	accesses the managed object (public member function)