Inheritance diagram for std::deque< _Tp, _Alloc >:

Public Types
typedef _Alloc	allocator_type

typedef _Base::const_iterator	const_iterator

typedef _Tp_alloc_type::const_pointer	const_pointer

typedef _Tp_alloc_type::const_reference	const_reference

typedef std::reverse_iterator < const_iterator >	const_reverse_iterator

typedef ptrdiff_t	difference_type

typedef _Base::iterator	iterator

typedef _Tp_alloc_type::pointer	pointer

typedef _Tp_alloc_type::reference	reference

typedef std::reverse_iterator < iterator >	reverse_iterator

typedef size_t	size_type

typedef _Tp	value_type

Public Member Functions
	deque ()

	deque (const allocator_type &__a)

	deque (size_type __n)

	deque (size_type __n, const value_type &__value, const allocator_type &__a=allocator_type())

	deque (const deque &__x)

	deque (deque &&__x)

	deque (initializer_list< value_type > __l, const allocator_type &__a=allocator_type())

template<typename _InputIterator >
	deque (_InputIterator __first, _InputIterator __last, const allocator_type &__a=allocator_type())

	~deque ()

template<typename... _Args>
deque< _Tp, _Alloc >::iterator	_M_insert_aux (iterator __pos, _Args &&...__args)

void	assign (size_type __n, const value_type &__val)

template<typename _InputIterator >
void	assign (_InputIterator __first, _InputIterator __last)

void	assign (initializer_list< value_type > __l)

reference	at (size_type __n)

const_reference	at (size_type __n) const

reference	back ()

const_reference	back () const

iterator	begin ()

const_iterator	begin () const

const_iterator	cbegin () const

const_iterator	cend () const

void	clear ()

const_reverse_iterator	crbegin () const

const_reverse_iterator	crend () const

template<typename... _Args>
iterator	emplace (iterator __position, _Args &&...__args)

template<typename... _Args>
void	emplace_back (_Args &&...__args)

template<typename... _Args>
void	emplace_front (_Args &&...__args)

bool	empty () const

iterator	end ()

const_iterator	end () const

iterator	erase (iterator __position)

iterator	erase (iterator __first, iterator __last)

reference	front ()

const_reference	front () const

allocator_type	get_allocator () const

iterator	insert (iterator __position, const value_type &__x)

iterator	insert (iterator __position, value_type &&__x)

void	insert (iterator __p, initializer_list< value_type > __l)

void	insert (iterator __position, size_type __n, const value_type &__x)

template<typename _InputIterator >
void	insert (iterator __position, _InputIterator __first, _InputIterator __last)

size_type	max_size () const

deque &	operator= (const deque &__x)

deque &	operator= (deque &&__x)

deque &	operator= (initializer_list< value_type > __l)

reference	operator[] (size_type __n)

const_reference	operator[] (size_type __n) const

void	pop_back ()

void	pop_front ()

void	push_back (const value_type &__x)

void	push_back (value_type &&__x)

void	push_front (const value_type &__x)

void	push_front (value_type &&__x)

reverse_iterator	rbegin ()

const_reverse_iterator	rbegin () const

reverse_iterator	rend ()

const_reverse_iterator	rend () const

void	resize (size_type __new_size)

void	resize (size_type __new_size, const value_type &__x)

void	shrink_to_fit ()

size_type	size () const

void	swap (deque &__x)

Protected Types
enum	{ _S_initial_map_size }

typedef _Alloc::template rebind< _Tp * >::other	_Map_alloc_type

typedef pointer *	_Map_pointer

Protected Member Functions
_Tp **	_M_allocate_map (size_t __n)

_Tp *	_M_allocate_node ()

template<typename _InputIterator >
void	_M_assign_aux (_InputIterator __first, _InputIterator __last, std::input_iterator_tag)

template<typename _ForwardIterator >
void	_M_assign_aux (_ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag)

template<typename _Integer >
void	_M_assign_dispatch (_Integer __n, _Integer __val, __true_type)

template<typename _InputIterator >
void	_M_assign_dispatch (_InputIterator __first, _InputIterator __last, __false_type)

void	_M_create_nodes (_Tp __nstart, _Tp __nfinish)

void	_M_deallocate_map (_Tp **__p, size_t __n)

void	_M_deallocate_node (_Tp *__p)

void	_M_default_append (size_type __n)

void	_M_default_initialize ()

template<typename _Alloc1 >
void	_M_destroy_data (iterator __first, iterator __last, const _Alloc1 &)

void	_M_destroy_data (iterator __first, iterator __last, const std::allocator< _Tp > &)

void	_M_destroy_data_aux (iterator __first, iterator __last)

void	_M_destroy_nodes (_Tp __nstart, _Tp __nfinish)

void	_M_erase_at_begin (iterator __pos)

void	_M_erase_at_end (iterator __pos)

void	_M_fill_assign (size_type __n, const value_type &__val)

void	_M_fill_initialize (const value_type &__value)

void	_M_fill_insert (iterator __pos, size_type __n, const value_type &__x)

_Map_alloc_type	_M_get_map_allocator () const

_Tp_alloc_type &	_M_get_Tp_allocator ()

const _Tp_alloc_type &	_M_get_Tp_allocator () const

template<typename _Integer >
void	_M_initialize_dispatch (_Integer __n, _Integer __x, __true_type)

template<typename _InputIterator >
void	_M_initialize_dispatch (_InputIterator __first, _InputIterator __last, __false_type)

void	_M_initialize_map (size_t)

template<typename... _Args>
iterator	_M_insert_aux (iterator __pos, _Args &&...__args)

void	_M_insert_aux (iterator __pos, size_type __n, const value_type &__x)

template<typename _ForwardIterator >
void	_M_insert_aux (iterator __pos, _ForwardIterator __first, _ForwardIterator __last, size_type __n)

template<typename _Integer >
void	_M_insert_dispatch (iterator __pos, _Integer __n, _Integer __x, __true_type)

template<typename _InputIterator >
void	_M_insert_dispatch (iterator __pos, _InputIterator __first, _InputIterator __last, __false_type)

void	_M_range_check (size_type __n) const

template<typename _InputIterator >
void	_M_range_insert_aux (iterator __pos, _InputIterator __first, _InputIterator __last, std::input_iterator_tag)

template<typename _ForwardIterator >
void	_M_range_insert_aux (iterator __pos, _ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag)


template<typename _InputIterator >
void	_M_range_initialize (_InputIterator __first, _InputIterator __last, std::input_iterator_tag)

template<typename _ForwardIterator >
void	_M_range_initialize (_ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag)


template<typename... _Args>
void	_M_push_back_aux (_Args &&...__args)

template<typename... _Args>
void	_M_push_front_aux (_Args &&...__args)

void	_M_pop_back_aux ()

void	_M_pop_front_aux ()


iterator	_M_reserve_elements_at_front (size_type __n)

iterator	_M_reserve_elements_at_back (size_type __n)

void	_M_new_elements_at_front (size_type __new_elements)

void	_M_new_elements_at_back (size_type __new_elements)


void	_M_reserve_map_at_back (size_type __nodes_to_add=1)

void	_M_reserve_map_at_front (size_type __nodes_to_add=1)

void	_M_reallocate_map (size_type __nodes_to_add, bool __add_at_front)

Static Protected Member Functions
static size_t	_S_buffer_size ()

Protected Attributes
_Deque_impl	_M_impl

Detailed Description

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>
class std::deque< _Tp, _Alloc >

A standard container using fixed-size memory allocation and constant-time manipulation of elements at either end.

Meets the requirements of a container, a reversible container, and a sequence, including the optional sequence requirements.

In previous HP/SGI versions of deque, there was an extra template parameter so users could control the node size. This extension turned out to violate the C++ standard (it can be detected using template template parameters), and it was removed.

Here's how a deque<Tp> manages memory. Each deque has 4 members:

Tp** _M_map
size_t _M_map_size
iterator _M_start, _M_finish

map_size is at least 8. map is an array of map_size pointers-to-. (The name map has nothing to do with the std::map class, and nodes should not be confused with std::list's usage of node.)

A node has no specific type name as such, but it is referred to as node in this file. It is a simple array-of-Tp. If Tp is very large, there will be one Tp element per node (i.e., an array of one). For non-huge Tp's, node size is inversely related to Tp size: the larger the Tp, the fewer Tp's will fit in a node. The goal here is to keep the total size of a node relatively small and constant over different Tp's, to improve allocator efficiency.

Not every pointer in the map array will point to a node. If the initial number of elements in the deque is small, the /middle/ map pointers will be valid, and the ones at the edges will be unused. This same situation will arise as the map grows: available map pointers, if any, will be on the ends. As new nodes are created, only a subset of the map's pointers need to be copied outward.

Class invariants:

For any nonsingular iterator i:
- i.node points to a member of the map array. (Yes, you read that correctly: i.node does not actually point to a node.) The member of the map array is what actually points to the node.
- i.first == *(i.node) (This points to the node (first Tp element).)
- i.last == i.first + node_size
- i.cur is a pointer in the range [i.first, i.last). NOTE: the implication of this is that i.cur is always a dereferenceable pointer, even if i is a past-the-end iterator.
Start and Finish are always nonsingular iterators. NOTE: this means that an empty deque must have one node, a deque with <N elements (where N is the node buffer size) must have one node, a deque with N through (2N-1) elements must have two nodes, etc.
For every node other than start.node and finish.node, every element in the node is an initialized object. If start.node == finish.node, then [start.cur, finish.cur) are initialized objects, and the elements outside that range are uninitialized storage. Otherwise, [start.cur, start.last) and [finish.first, finish.cur) are initialized objects, and [start.first, start.cur) and [finish.cur, finish.last) are uninitialized storage.
[map, map + map_size) is a valid, non-empty range.
[start.node, finish.node] is a valid range contained within [map, map + map_size).
A pointer in the range [map, map + map_size) points to an allocated node if and only if the pointer is in the range [start.node, finish.node].

Here's the magic: nothing in deque is aware of the discontiguous storage!

The memory setup and layout occurs in the parent, _Base, and the iterator class is entirely responsible for leaping from one node to the next. All the implementation routines for deque itself work only through the start and finish iterators. This keeps the routines simple and sane, and we can use other standard algorithms as well.

Definition at line 719 of file stl_deque.h.

Constructor & Destructor Documentation

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque ( )

inline

Default constructor creates no elements.

Definition at line 771 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque ( const allocator_type & __a )

inlineexplicit

Creates a deque with no elements.

Parameters

a	An allocator object.

Definition at line 779 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque ( size_type __n )

inlineexplicit

Creates a deque with default constructed elements.

Parameters

n	The number of elements to initially create.

This constructor fills the deque with n default constructed elements.

Definition at line 791 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque	(	size_type	__n,
		const value_type &	__value,
		const allocator_type &	__a = `allocator_type()`
	)

inline

Creates a deque with copies of an exemplar element.

Parameters

n	The number of elements to initially create.
value	An element to copy.
a	An allocator.

This constructor fills the deque with n copies of value.

Definition at line 803 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_fill_initialize().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque ( const deque< _Tp, _Alloc > & __x )

inline

Deque copy constructor.

Parameters

x	A deque of identical element and allocator types.

The newly-created deque uses a copy of the allocation object used by x.

Definition at line 830 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::begin(), and std::deque< _Tp, _Alloc >::end().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque ( deque< _Tp, _Alloc > && __x )

inline

Deque move constructor.

Parameters

x	A deque of identical element and allocator types.

The newly-created deque contains the exact contents of x. The contents of x are a valid, but unspecified deque.

Definition at line 844 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::deque	(	initializer_list< value_type >	__l,
		const allocator_type &	__a = `allocator_type()`
	)

inline

Builds a deque from an initializer list.

Parameters

l	An initializer_list.
a	An allocator object.

Create a deque consisting of copies of the elements in the initializer_list l.

This will call the element type's copy constructor N times (where N is l.size()) and do no memory reallocation.

Definition at line 858 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_range_initialize().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

template<typename _InputIterator >

std::deque< _Tp, _Alloc >::deque	(	_InputIterator	__first,
		_InputIterator	__last,
		const allocator_type &	__a = `allocator_type()`
	)

inline

Builds a deque from a range.

Parameters

first	An input iterator.
last	An input iterator.
a	An allocator object.

Create a deque consisting of copies of the elements from [first, last).

If the iterators are forward, bidirectional, or random-access, then this will call the elements' copy constructor N times (where N is distance(first,last)) and do no memory reallocation. But if only input iterators are used, then this will do at most 2N calls to the copy constructor, and logN memory reallocations.

Definition at line 883 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

std::deque< _Tp, _Alloc >::~deque ( )

inline

The dtor only erases the elements, and note that if the elements themselves are pointers, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 897 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::begin(), and std::deque< _Tp, _Alloc >::end().

Member Function Documentation

template<typename _Tp , typename _Alloc >

void deque::_M_fill_initialize ( const value_type & __value )

protected

Fills the deque with copies of value.

Parameters

value Initial value.

Returns: Nothing.

Precondition: _M_start and _M_finish have already been initialized, but none of the deque's elements have yet been constructed.

This function is called only when the user provides an explicit size (with or without an explicit exemplar value).

Definition at line 335 of file deque.tcc.

References std::_Destroy().

Referenced by std::deque< _Tp, _Alloc >::deque().

template<typename _Tp , typename _Alloc >

void std::_Deque_base< _Tp, _Alloc >::_M_initialize_map ( size_t __num_elements )

protectedinherited

Layout storage.

Parameters

num_elements The count of T's for which to allocate space at first.

Returns: Nothing.

The initial underlying memory layout is a bit complicated...

Definition at line 574 of file stl_deque.h.

References std::max().

template<typename _Tp , typename _Alloc >

void deque::_M_new_elements_at_back ( size_type __new_elements )

protected

Memory-handling helpers for the previous internal insert functions.

Definition at line 829 of file deque.tcc.

References std::size().

Referenced by std::deque< _Tp, _Alloc >::_M_reserve_elements_at_back().

template<typename _Tp , typename _Alloc >

void deque::_M_new_elements_at_front ( size_type __new_elements )

protected

Memory-handling helpers for the previous internal insert functions.

Definition at line 804 of file deque.tcc.

References std::size().

Referenced by std::deque< _Tp, _Alloc >::_M_reserve_elements_at_front().

template<typename _Tp , typename _Alloc >

void deque::_M_pop_back_aux ( )

protected

Helper functions for push_* and pop_*.

Definition at line 485 of file deque.tcc.

Referenced by std::deque< _Tp, _Alloc >::pop_back().

template<typename _Tp , typename _Alloc >

void deque::_M_pop_front_aux ( )

protected

Helper functions for push_* and pop_*.

Definition at line 500 of file deque.tcc.

Referenced by std::deque< _Tp, _Alloc >::pop_front().

template<typename _Tp , typename _Alloc >

template<typename... _Args>

void deque::_M_push_back_aux ( _Args &&... __args )

protected

Helper functions for push_* and pop_*.

Definition at line 419 of file deque.tcc.

Referenced by std::deque< _Tp, _Alloc >::push_back().

template<typename _Tp , typename _Alloc >

template<typename... _Args>

void deque::_M_push_front_aux ( _Args &&... __args )

protected

Helper functions for push_* and pop_*.

Definition at line 453 of file deque.tcc.

Referenced by std::deque< _Tp, _Alloc >::push_front().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::_M_range_check ( size_type __n ) const

inlineprotected

Safety check used only from at().

Definition at line 1237 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::size().

Referenced by std::deque< _Tp, _Alloc >::at().

template<typename _Tp , typename _Alloc >

template<typename _InputIterator >

void deque::_M_range_initialize	(	_InputIterator	__first,
		_InputIterator	__last,
		std::input_iterator_tag
	)

protected

Fills the deque with whatever is in [first,last).

Parameters

first	An input iterator.
last	An input iterator.

Returns: Nothing.

If the iterators are actually forward iterators (or better), then the memory layout can be done all at once. Else we move forward using push_back on each value from the iterator.

Definition at line 361 of file deque.tcc.

Referenced by std::deque< _Tp, _Alloc >::deque().

template<typename _Tp , typename _Alloc >

template<typename _ForwardIterator >

void deque::_M_range_initialize	(	_ForwardIterator	__first,
		_ForwardIterator	__last,
		std::forward_iterator_tag
	)

protected

Fills the deque with whatever is in [first,last).

Parameters

first	An input iterator.
last	An input iterator.

Returns: Nothing.

If the iterators are actually forward iterators (or better), then the memory layout can be done all at once. Else we move forward using push_back on each value from the iterator.

Definition at line 381 of file deque.tcc.

References std::_Destroy(), std::advance(), and std::distance().

template<typename _Tp , typename _Alloc >

void deque::_M_reallocate_map	(	size_type	__nodes_to_add,
		bool	__add_at_front
	)

protected

Memory-handling helpers for the major map.

Makes sure the _M_map has space for new nodes. Does not actually add the nodes. Can invalidate _M_map pointers. (And consequently, deque iterators.)

Definition at line 854 of file deque.tcc.

References std::max().

Referenced by std::deque< _Tp, _Alloc >::_M_reserve_map_at_back(), and std::deque< _Tp, _Alloc >::_M_reserve_map_at_front().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

iterator std::deque< _Tp, _Alloc >::_M_reserve_elements_at_back ( size_type __n )

inlineprotected

Memory-handling helpers for the previous internal insert functions.

Definition at line 1858 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_new_elements_at_back().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

iterator std::deque< _Tp, _Alloc >::_M_reserve_elements_at_front ( size_type __n )

inlineprotected

Memory-handling helpers for the previous internal insert functions.

Definition at line 1848 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_new_elements_at_front().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::_M_reserve_map_at_back ( size_type __nodes_to_add = 1 )

inlineprotected

Memory-handling helpers for the major map.

Makes sure the _M_map has space for new nodes. Does not actually add the nodes. Can invalidate _M_map pointers. (And consequently, deque iterators.)

Definition at line 1884 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_reallocate_map().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::_M_reserve_map_at_front ( size_type __nodes_to_add = 1 )

inlineprotected

Memory-handling helpers for the major map.

Makes sure the _M_map has space for new nodes. Does not actually add the nodes. Can invalidate _M_map pointers. (And consequently, deque iterators.)

Definition at line 1892 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_reallocate_map().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::assign	(	size_type	__n,
		const value_type &	__val
	)

inline

Assigns a given value to a deque.

Parameters

n	Number of elements to be assigned.
val	Value to be assigned.

This function fills a deque with n copies of the given value. Note that the assignment completely changes the deque and that the resulting deque's size is the same as the number of elements assigned. Old data may be lost.

Definition at line 958 of file stl_deque.h.

Referenced by std::deque< _Tp, _Alloc >::assign(), and std::deque< _Tp, _Alloc >::operator=().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

template<typename _InputIterator >

void std::deque< _Tp, _Alloc >::assign	(	_InputIterator	__first,
		_InputIterator	__last
	)

inline

Assigns a range to a deque.

Parameters

first	An input iterator.
last	An input iterator.

This function fills a deque with copies of the elements in the range [first,last).

Note that the assignment completely changes the deque and that the resulting deque's size is the same as the number of elements assigned. Old data may be lost.

Definition at line 975 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::assign ( initializer_list< value_type > __l )

inline

Assigns an initializer list to a deque.

Parameters

l	An initializer_list.

This function fills a deque with copies of the elements in the initializer_list l.

Note that the assignment completely changes the deque and that the resulting deque's size is the same as the number of elements assigned. Old data may be lost.

Definition at line 994 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::assign().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

reference std::deque< _Tp, _Alloc >::at ( size_type __n )

inline

Provides access to the data contained in the deque.

Parameters

n	The index of the element for which data should be accessed.

Returns: Read/write reference to data.

Exceptions

std::out_of_range If n is an invalid index.

This function provides for safer data access. The parameter is first checked that it is in the range of the deque. The function throws out_of_range if the check fails.

Definition at line 1256 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_range_check().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reference std::deque< _Tp, _Alloc >::at ( size_type __n ) const

inline

Provides access to the data contained in the deque.

Parameters

n	The index of the element for which data should be accessed.

Returns: Read-only (constant) reference to data.

Exceptions

std::out_of_range If n is an invalid index.

This function provides for safer data access. The parameter is first checked that it is in the range of the deque. The function throws out_of_range if the check fails.

Definition at line 1274 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_range_check().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

reference std::deque< _Tp, _Alloc >::back ( )

inline

Returns a read/write reference to the data at the last element of the deque.

Definition at line 1301 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::end().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reference std::deque< _Tp, _Alloc >::back ( ) const

inline

Returns a read-only (constant) reference to the data at the last element of the deque.

Definition at line 1313 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::end().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

iterator std::deque< _Tp, _Alloc >::begin ( )

inline

Returns a read/write iterator that points to the first element in the deque. Iteration is done in ordinary element order.

Definition at line 1009 of file stl_deque.h.

Referenced by std::deque< _Tp, _Alloc >::clear(), std::deque< _Tp, _Alloc >::deque(), std::deque< _Tp, _Alloc >::front(), std::deque< _Tp, _Alloc >::operator=(), std::operator==(), and std::deque< _Tp, _Alloc >::~deque().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_iterator std::deque< _Tp, _Alloc >::begin ( ) const

inline

Returns a read-only (constant) iterator that points to the first element in the deque. Iteration is done in ordinary element order.

Definition at line 1017 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_iterator std::deque< _Tp, _Alloc >::cbegin ( ) const

inline

Returns a read-only (constant) iterator that points to the first element in the deque. Iteration is done in ordinary element order.

Definition at line 1080 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_iterator std::deque< _Tp, _Alloc >::cend ( ) const

inline

Returns a read-only (constant) iterator that points one past the last element in the deque. Iteration is done in ordinary element order.

Definition at line 1089 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::clear ( )

inline

Erases all the elements. Note that this function only erases the elements, and that if the elements themselves are pointers, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 1579 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::begin().

Referenced by std::deque< _Tp, _Alloc >::operator=().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reverse_iterator std::deque< _Tp, _Alloc >::crbegin ( ) const

inline

Returns a read-only (constant) reverse iterator that points to the last element in the deque. Iteration is done in reverse element order.

Definition at line 1098 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reverse_iterator std::deque< _Tp, _Alloc >::crend ( ) const

inline

Returns a read-only (constant) reverse iterator that points to one before the first element in the deque. Iteration is done in reverse element order.

Definition at line 1107 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

template<typename... _Args>

iterator std::deque< _Tp, _Alloc >::emplace	(	iterator	__position,
		_Args &&...	__args
	)

Inserts an object in deque before specified iterator.

Parameters

position	An iterator into the deque.
args	Arguments.

Returns: An iterator that points to the inserted data.

This function will insert an object of type T constructed with T(std::forward<Args>(args)...) before the specified location.

Referenced by std::deque< _Tp, _Alloc >::insert().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

bool std::deque< _Tp, _Alloc >::empty ( ) const

inline

Returns true if the deque is empty. (Thus begin() would equal end().)

Definition at line 1200 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

iterator std::deque< _Tp, _Alloc >::end ( )

inline

Returns a read/write iterator that points one past the last element in the deque. Iteration is done in ordinary element order.

Definition at line 1026 of file stl_deque.h.

Referenced by std::deque< _Tp, _Alloc >::back(), std::deque< _Tp, _Alloc >::deque(), std::deque< _Tp, _Alloc >::operator=(), std::operator==(), and std::deque< _Tp, _Alloc >::~deque().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_iterator std::deque< _Tp, _Alloc >::end ( ) const

inline

Returns a read-only (constant) iterator that points one past the last element in the deque. Iteration is done in ordinary element order.

Definition at line 1035 of file stl_deque.h.

template<typename _Tp , typename _Alloc >

deque< _Tp, _Alloc >::iterator deque::erase ( iterator __position )

Remove element at given position.

Parameters

position Iterator pointing to element to be erased.

Returns: An iterator pointing to the next element (or end()).

This function will erase the element at the given position and thus shorten the deque by one.

The user is cautioned that this function only erases the element, and that if the element is itself a pointer, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 196 of file deque.tcc.

References std::begin(), std::end(), and std::size().

template<typename _Tp , typename _Alloc >

deque< _Tp, _Alloc >::iterator deque::erase	(	iterator	__first,
		iterator	__last
	)

Remove a range of elements.

Parameters

first	Iterator pointing to the first element to be erased.
last	Iterator pointing to one past the last element to be erased.

Returns: An iterator pointing to the element pointed to by last prior to erasing (or end()).

This function will erase the elements in the range [first,last) and shorten the deque accordingly.

The user is cautioned that this function only erases the elements, and that if the elements themselves are pointers, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 219 of file deque.tcc.

References std::begin(), std::end(), and std::size().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

reference std::deque< _Tp, _Alloc >::front ( )

inline

Returns a read/write reference to the data at the first element of the deque.

Definition at line 1285 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::begin().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reference std::deque< _Tp, _Alloc >::front ( ) const

inline

Returns a read-only (constant) reference to the data at the first element of the deque.

Definition at line 1293 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::begin().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

allocator_type std::deque< _Tp, _Alloc >::get_allocator ( ) const

inline

Get a copy of the memory allocation object.

Definition at line 1000 of file stl_deque.h.

template<typename _Tp , typename _Alloc >

deque< _Tp, _Alloc >::iterator deque::insert	(	iterator	__position,
		const value_type &	__x
	)

Inserts given value into deque before specified iterator.

Parameters

position	An iterator into the deque.
x	Data to be inserted.

Returns: An iterator that points to the inserted data.

This function will insert a copy of the given value before the specified location.

Definition at line 151 of file deque.tcc.

Referenced by std::deque< _Tp, _Alloc >::insert(), and std::deque< _Tp, _Alloc >::resize().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

iterator std::deque< _Tp, _Alloc >::insert	(	iterator	__position,
		value_type &&	__x
	)

inline

Inserts given rvalue into deque before specified iterator.

Parameters

position	An iterator into the deque.
x	Data to be inserted.

Returns: An iterator that points to the inserted data.

This function will insert a copy of the given rvalue before the specified location.

Definition at line 1464 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::emplace().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::insert	(	iterator	__p,
		initializer_list< value_type >	__l
	)

inline

Inserts an initializer list into the deque.

Parameters

p	An iterator into the deque.
l	An initializer_list.

This function will insert copies of the data in the initializer_list l into the deque before the location specified by p. This is known as list insert.

Definition at line 1477 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::insert().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::insert	(	iterator	__position,
		size_type	__n,
		const value_type &	__x
	)

inline

Inserts a number of copies of given data into the deque.

Parameters

position	An iterator into the deque.
n	Number of elements to be inserted.
x	Data to be inserted.

This function will insert a specified number of copies of the given data before the location specified by position.

Definition at line 1491 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

template<typename _InputIterator >

void std::deque< _Tp, _Alloc >::insert	(	iterator	__position,
		_InputIterator	__first,
		_InputIterator	__last
	)

inline

Inserts a range into the deque.

Parameters

position	An iterator into the deque.
first	An input iterator.
last	An input iterator.

This function will insert copies of the data in the range [first,last) into the deque before the location specified by pos. This is known as range insert.

Definition at line 1506 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

size_type std::deque< _Tp, _Alloc >::max_size ( ) const

inline

Returns the size() of the largest possible deque.

Definition at line 1119 of file stl_deque.h.

template<typename _Tp , typename _Alloc >

deque< _Tp, _Alloc > & deque::operator= ( const deque< _Tp, _Alloc > & __x )

Deque assignment operator.

Parameters

x	A deque of identical element and allocator types.

All the elements of x are copied, but unlike the copy constructor, the allocator object is not copied.

Definition at line 95 of file deque.tcc.

References std::deque< _Tp, _Alloc >::begin(), std::deque< _Tp, _Alloc >::end(), std::deque< _Tp, _Alloc >::size(), and std::size().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

deque& std::deque< _Tp, _Alloc >::operator= ( deque< _Tp, _Alloc > && __x )

inline

Deque move assignment operator.

Parameters

x	A deque of identical element and allocator types.

The contents of x are moved into this deque (without copying). x is a valid, but unspecified deque.

Definition at line 919 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::clear(), and std::deque< _Tp, _Alloc >::swap().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

deque& std::deque< _Tp, _Alloc >::operator= ( initializer_list< value_type > __l )

inline

Assigns an initializer list to a deque.

Parameters

l	An initializer_list.

This function fills a deque with copies of the elements in the initializer_list l.

Note that the assignment completely changes the deque and that the resulting deque's size is the same as the number of elements assigned. Old data may be lost.

Definition at line 940 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::assign().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

reference std::deque< _Tp, _Alloc >::operator[] ( size_type __n )

inline

Subscript access to the data contained in the deque.

Parameters

n	The index of the element for which data should be accessed.

Returns: Read/write reference to data.

This operator allows for easy, array-style, data access. Note that data access with this operator is unchecked and out_of_range lookups are not defined. (For checked lookups see at().)

Definition at line 1216 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reference std::deque< _Tp, _Alloc >::operator[] ( size_type __n ) const

inline

Subscript access to the data contained in the deque.

Parameters

n	The index of the element for which data should be accessed.

Returns: Read-only (constant) reference to data.

This operator allows for easy, array-style, data access. Note that data access with this operator is unchecked and out_of_range lookups are not defined. (For checked lookups see at().)

Definition at line 1231 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::pop_back ( )

inline

Removes last element.

This is a typical stack operation. It shrinks the deque by one.

Note that no data is returned, and if the last element's data is needed, it should be retrieved before pop_back() is called.

Definition at line 1414 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_pop_back_aux().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::pop_front ( )

inline

Removes first element.

This is a typical stack operation. It shrinks the deque by one.

Note that no data is returned, and if the first element's data is needed, it should be retrieved before pop_front() is called.

Definition at line 1393 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_pop_front_aux().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::push_back ( const value_type & __x )

inline

Add data to the end of the deque.

Parameters

x	Data to be added.

This is a typical stack operation. The function creates an element at the end of the deque and assigns the given data to it. Due to the nature of a deque this operation can be done in constant time.

Definition at line 1362 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_push_back_aux().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::push_front ( const value_type & __x )

inline

Add data to the front of the deque.

Parameters

x	Data to be added.

This is a typical stack operation. The function creates an element at the front of the deque and assigns the given data to it. Due to the nature of a deque this operation can be done in constant time.

Definition at line 1331 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::_M_push_front_aux().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

reverse_iterator std::deque< _Tp, _Alloc >::rbegin ( )

inline

Returns a read/write reverse iterator that points to the last element in the deque. Iteration is done in reverse element order.

Definition at line 1044 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reverse_iterator std::deque< _Tp, _Alloc >::rbegin ( ) const

inline

Returns a read-only (constant) reverse iterator that points to the last element in the deque. Iteration is done in reverse element order.

Definition at line 1053 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

reverse_iterator std::deque< _Tp, _Alloc >::rend ( )

inline

Returns a read/write reverse iterator that points to one before the first element in the deque. Iteration is done in reverse element order.

Definition at line 1062 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

const_reverse_iterator std::deque< _Tp, _Alloc >::rend ( ) const

inline

Returns a read-only (constant) reverse iterator that points to one before the first element in the deque. Iteration is done in reverse element order.

Definition at line 1071 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::resize ( size_type __new_size )

inline

Resizes the deque to the specified number of elements.

Parameters

new_size Number of elements the deque should contain.

This function will resize the deque to the specified number of elements. If the number is smaller than the deque's current size the deque is truncated, otherwise default constructed elements are appended.

Definition at line 1133 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::size().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::resize	(	size_type	__new_size,
		const value_type &	__x
	)

inline

Resizes the deque to the specified number of elements.

Parameters

new_size	Number of elements the deque should contain.
x	Data with which new elements should be populated.

This function will resize the deque to the specified number of elements. If the number is smaller than the deque's current size the deque is truncated, otherwise the deque is extended and new elements are populated with given data.

Definition at line 1155 of file stl_deque.h.

References std::deque< _Tp, _Alloc >::insert(), and std::deque< _Tp, _Alloc >::size().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::shrink_to_fit ( )

inline

A non-binding request to reduce memory use.

Definition at line 1191 of file stl_deque.h.

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

size_type std::deque< _Tp, _Alloc >::size ( ) const

inline

Returns the number of elements in the deque.

Definition at line 1114 of file stl_deque.h.

Referenced by std::deque< _Tp, _Alloc >::_M_range_check(), std::deque< _Tp, _Alloc >::operator=(), std::operator==(), and std::deque< _Tp, _Alloc >::resize().

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>

void std::deque< _Tp, _Alloc >::swap ( deque< _Tp, _Alloc > & __x )

inline

Swaps data with another deque.

Parameters

x	A deque of the same element and allocator types.

This exchanges the elements between two deques in constant time. (Four pointers, so it should be quite fast.) Note that the global std::swap() function is specialized such that std::swap(d1,d2) will feed to this function.

Definition at line 1559 of file stl_deque.h.

Referenced by std::deque< _Tp, _Alloc >::operator=(), and std::swap().

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

template<typename _Tp, typename _Alloc = std::allocator<_Tp>> class std::deque< _Tp, _Alloc >

Constructor & Destructor Documentation

Member Function Documentation

template<typename _Tp, typename _Alloc = std::allocator<_Tp>>
class std::deque< _Tp, _Alloc >