std::vector< _Tp, _Alloc >(3cxx) std::vector< _Tp, _Alloc >(3cxx)
NAME
std::vector< _Tp, _Alloc > - A standard container which offers fixed
time access to individual elements in any order.
SYNOPSIS
Inherits std::_Vector_base< _Tp, std::allocator< _Tp > >.
Public Types
typedef _Alloc allocator_type
typedef __gnu_cxx::__normal_iterator< const_pointer, vector >
const_iterator
typedef _Alloc_traits::const_pointer const_pointer
typedef _Alloc_traits::const_reference const_reference
typedef std::reverse_iterator< const_iterator > const_reverse_iterator
typedef ptrdiff_t difference_type
typedef __gnu_cxx::__normal_iterator< pointer, vector > iterator
typedef _Base::pointer pointer
typedef _Alloc_traits::reference reference
typedef std::reverse_iterator< iterator > reverse_iterator
typedef size_t size_type
typedef _Tp value_type
Public Member Functions
vector ()=default
Creates a vector with no elements.
template<typename _InputIterator , typename =
std::_RequireInputIter<_InputIterator>> vector (_InputIterator
__first, _InputIterator __last, const allocator_type
&__a=allocator_type())
Builds a vector from a range.
vector (const allocator_type &__a) noexcept
Creates a vector with no elements.
vector (const vector &__x)
Vector copy constructor.
vector (const vector &__x, const allocator_type &__a)
Copy constructor with alternative allocator.
vector (initializer_list< value_type > __l, const allocator_type
&__a=allocator_type())
Builds a vector from an initializer list.
vector (size_type __n, const allocator_type &__a=allocator_type())
Creates a vector with default constructed elements.
vector (size_type __n, const value_type &__value, const allocator_type
&__a=allocator_type())
Creates a vector with copies of an exemplar element.
vector (vector &&) noexcept=default
Vector move constructor.
vector (vector &&__rv, const allocator_type &__m)
noexcept(noexcept(vector(std::declval< vector && >(), std::declval<
const allocator_type & >(), std::declval< typename
_Alloc_traits::is_always_equal >())))
Move constructor with alternative allocator.
~vector () noexcept
template<typename... _Args> auto _M_emplace_aux (const_iterator
__position, _Args &&... __args) -> iterator
template<typename _InputIterator , typename =
std::_RequireInputIter<_InputIterator>> void assign (_InputIterator
__first, _InputIterator __last)
Assigns a range to a vector.
void assign (initializer_list< value_type > __l)
Assigns an initializer list to a vector.
void assign (size_type __n, const value_type &__val)
Assigns a given value to a vector.
reference at (size_type __n)
Provides access to the data contained in the vector.
const_reference at (size_type __n) const
Provides access to the data contained in the vector.
const_reference back () const noexcept
reference back () noexcept
const_iterator begin () const noexcept
iterator begin () noexcept
size_type capacity () const noexcept
const_iterator cbegin () const noexcept
const_iterator cend () const noexcept
void clear () noexcept
const_reverse_iterator crbegin () const noexcept
const_reverse_iterator crend () const noexcept
const _Tp * data () const noexcept
_Tp * data () noexcept
template<typename... _Args> iterator emplace (const_iterator
__position, _Args &&... __args)
Inserts an object in vector before specified iterator.
template<typename... _Args> reference emplace_back (_Args &&... __args)
bool empty () const noexcept
const_iterator end () const noexcept
iterator end () noexcept
iterator erase (const_iterator __first, const_iterator __last)
Remove a range of elements.
iterator erase (const_iterator __position)
Remove element at given position.
const_reference front () const noexcept
reference front () noexcept
allocator_type get_allocator () const noexcept
Get a copy of the memory allocation object.
template<typename _InputIterator , typename =
std::_RequireInputIter<_InputIterator>> iterator insert
(const_iterator __position, _InputIterator __first, _InputIterator
__last)
Inserts a range into the vector.
iterator insert (const_iterator __position, const value_type &__x)
Inserts given value into vector before specified iterator.
iterator insert (const_iterator __position, initializer_list<
value_type > __l)
Inserts an initializer_list into the vector.
iterator insert (const_iterator __position, size_type __n, const
value_type &__x)
Inserts a number of copies of given data into the vector.
iterator insert (const_iterator __position, value_type &&__x)
Inserts given rvalue into vector before specified iterator.
size_type max_size () const noexcept
vector & operator= (const vector &__x)
Vector assignment operator.
vector & operator= (initializer_list< value_type > __l)
Vector list assignment operator.
vector & operator= (vector &&__x)
noexcept(_Alloc_traits::_S_nothrow_move())
Vector move assignment operator.
const_reference operator[] (size_type __n) const noexcept
Subscript access to the data contained in the vector.
reference operator[] (size_type __n) noexcept
Subscript access to the data contained in the vector.
void pop_back () noexcept
Removes last element.
void push_back (const value_type &__x)
Add data to the end of the vector.
void push_back (value_type &&__x)
const_reverse_iterator rbegin () const noexcept
reverse_iterator rbegin () noexcept
const_reverse_iterator rend () const noexcept
reverse_iterator rend () noexcept
void reserve (size_type __n)
Attempt to preallocate enough memory for specified number of
elements.
void resize (size_type __new_size)
Resizes the vector to the specified number of elements.
void resize (size_type __new_size, const value_type &__x)
Resizes the vector to the specified number of elements.
void shrink_to_fit ()
size_type size () const noexcept
void swap (vector &__x) noexcept
Swaps data with another vector.
Protected Member Functions
pointer _M_allocate (size_t __n)
pointer _M_allocate (size_t __n)
template<typename _ForwardIterator > pointer _M_allocate_and_copy
(size_type __n, _ForwardIterator __first, _ForwardIterator __last)
template<typename _ForwardIterator > void _M_assign_aux
(_ForwardIterator __first, _ForwardIterator __last,
std::forward_iterator_tag)
template<typename _InputIterator > void _M_assign_aux (_InputIterator
__first, _InputIterator __last, std::input_iterator_tag)
template<typename _InputIterator > void _M_assign_dispatch
(_InputIterator __first, _InputIterator __last, __false_type)
template<typename _Integer > void _M_assign_dispatch (_Integer __n,
_Integer __val, __true_type)
size_type _M_check_len (size_type __n, const char *__s) const
void _M_create_storage (size_t __n)
void _M_deallocate (pointer __p, size_t __n)
void _M_deallocate (pointer __p, size_t __n)
void _M_default_append (size_type __n)
void _M_default_initialize (size_type __n)
template<typename... _Args> iterator _M_emplace_aux (const_iterator
__position, _Args &&... __args)
iterator _M_emplace_aux (const_iterator __position, value_type &&__v)
iterator _M_erase (iterator __first, iterator __last)
iterator _M_erase (iterator __position)
void _M_erase_at_end (pointer __pos) noexcept
void _M_fill_assign (size_type __n, const value_type &__val)
void _M_fill_initialize (size_type __n, const value_type &__value)
void _M_fill_insert (iterator __pos, size_type __n, const value_type
&__x)
const _Tp_alloc_type & _M_get_Tp_allocator () const noexcept
const _Tp_alloc_type & _M_get_Tp_allocator () const noexcept
_Tp_alloc_type & _M_get_Tp_allocator () noexcept
template<typename _Arg > void _M_insert_aux (iterator __position, _Arg
&&__arg)
template<typename _InputIterator > void _M_insert_dispatch (iterator
__pos, _InputIterator __first, _InputIterator __last, __false_type)
template<typename _Integer > void _M_insert_dispatch (iterator __pos,
_Integer __n, _Integer __val, __true_type)
iterator _M_insert_rval (const_iterator __position, value_type &&__v)
void _M_range_check (size_type __n) const
Safety check used only from at().
template<typename _ForwardIterator > void _M_range_initialize
(_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_insert (iterator
__pos, _ForwardIterator __first, _ForwardIterator __last,
std::forward_iterator_tag)
template<typename _InputIterator > void _M_range_insert (iterator
__pos, _InputIterator __first, _InputIterator __last,
std::input_iterator_tag)
template<typename... _Args> void _M_realloc_insert (iterator
__position, _Args &&... __args)
bool _M_shrink_to_fit ()
allocator_type get_allocator () const noexcept
Static Protected Member Functions
static size_type _S_check_init_len (size_type __n, const allocator_type
&__a)
static size_type _S_max_size (const _Tp_alloc_type &__a) noexcept
Protected Attributes
_Vector_impl _M_impl
Detailed Description
template<typename _Tp, typename _Alloc = std::allocator<_Tp>>
class std::vector< _Tp, _Alloc >" A standard container which offers
fixed time access to individual elements in any order.
Template Parameters
_Tp Type of element.
_Alloc Allocator type, defaults to allocator<_Tp>.
Meets the requirements of a container, a reversible container, and a
sequence, including the optional sequence requirements with the
exception of push_front and pop_front.
In some terminology a vector can be described as a dynamic C-style
array, it offers fast and efficient access to individual elements in
any order and saves the user from worrying about memory and size
allocation. Subscripting ( [] ) access is also provided as with C-style
arrays.
Constructor & Destructor Documentation
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector () [default]
Creates a vector with no elements.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (const allocator_type & __a)
[inline], [explicit], [noexcept]
Creates a vector with no elements.
Parameters
__a An allocator object.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (size_type __n, const allocator_type
& __a = allocator_type()) [inline], [explicit]
Creates a vector with default constructed elements.
Parameters
__n The number of elements to initially create.
__a An allocator.
This constructor fills the vector with __n default constructed
elements.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (size_type __n, const value_type &
__value, const allocator_type & __a = allocator_type()) [inline]
Creates a vector 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 vector with __n copies of __value.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (const vector< _Tp, _Alloc > & __x)
[inline]
Vector copy constructor.
Parameters
__x A vector of identical element and allocator types.
All the elements of __x are copied, but any unused capacity in __x will
not be copied (i.e. capacity() == size() in the new vector).
The newly-created vector uses a copy of the allocator object used by
__x (unless the allocator traits dictate a different object).
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::end().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (vector< _Tp, _Alloc > &&)
[default], [noexcept]
Vector move constructor. The newly-created vector contains the exact
contents of the moved instance. The contents of the moved instance are
a valid, but unspecified vector.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (const vector< _Tp, _Alloc > & __x,
const allocator_type & __a) [inline]
Copy constructor with alternative allocator.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (vector< _Tp, _Alloc > && __rv,
const allocator_type & __m) [inline], [noexcept]
Move constructor with alternative allocator.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector (initializer_list< value_type > __l,
const allocator_type & __a = allocator_type()) [inline]
Builds a vector from an initializer list.
Parameters
__l An initializer_list.
__a An allocator.
Create a vector 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.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
template<typename _InputIterator , typename =
std::_RequireInputIter<_InputIterator>> std::vector< _Tp, _Alloc
>::vector (_InputIterator __first, _InputIterator __last, const
allocator_type & __a = allocator_type()) [inline]
Builds a vector from a range.
Parameters
__first An input iterator.
__last An input iterator.
__a An allocator.
Create a vector 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.
References std::__iterator_category().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::~vector () [inline], [noexcept]
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.
References std::_Destroy().
Member Function Documentation
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
template<typename _ForwardIterator > pointer std::vector< _Tp, _Alloc
>::_M_allocate_and_copy (size_type __n, _ForwardIterator __first,
_ForwardIterator __last) [inline], [protected]
Memory expansion handler. Uses the member allocation function to obtain
n bytes of memory, and then copies [first,last) into it.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::_M_range_check (size_type __n) const
[inline], [protected]
Safety check used only from at().
References std::vector< _Tp, _Alloc >::size().
Referenced by std::vector< _Tp, _Alloc >::at().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
template<typename _InputIterator , typename =
std::_RequireInputIter<_InputIterator>> void std::vector< _Tp, _Alloc
>::assign (_InputIterator __first, _InputIterator __last) [inline]
Assigns a range to a vector.
Parameters
__first An input iterator.
__last An input iterator.
This function fills a vector with copies of the elements in the range
[__first,__last).
Note that the assignment completely changes the vector and that the
resulting vector's size is the same as the number of elements assigned.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::assign (initializer_list< value_type > __l)
[inline]
Assigns an initializer list to a vector.
Parameters
__l An initializer_list.
This function fills a vector with copies of the elements in the
initializer list __l.
Note that the assignment completely changes the vector and that the
resulting vector's size is the same as the number of elements assigned.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::assign (size_type __n, const value_type &
__val) [inline]
Assigns a given value to a vector.
Parameters
__n Number of elements to be assigned.
__val Value to be assigned.
This function fills a vector with __n copies of the given value. Note
that the assignment completely changes the vector and that the
resulting vector's size is the same as the number of elements assigned.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> reference
std::vector< _Tp, _Alloc >::at (size_type __n) [inline]
Provides access to the data contained in the vector.
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 vector. The function throws
out_of_range if the check fails.
References std::vector< _Tp, _Alloc >::_M_range_check().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::at (size_type __n) const
[inline]
Provides access to the data contained in the vector.
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 vector. The function throws
out_of_range if the check fails.
References std::vector< _Tp, _Alloc >::_M_range_check().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::back () const [inline],
[noexcept]
Returns a read-only (constant) reference to the data at the last
element of the vector.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> reference
std::vector< _Tp, _Alloc >::back () [inline], [noexcept]
Returns a read/write reference to the data at the last element of the
vector.
Referenced by std::piecewise_constant_distribution< _RealType >::max(),
and std::piecewise_linear_distribution< _RealType >::max().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::begin () const [inline],
[noexcept]
Returns a read-only (constant) iterator that points to the first
element in the vector. Iteration is done in ordinary element order.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::begin () [inline], [noexcept]
Returns a read/write iterator that points to the first element in the
vector. Iteration is done in ordinary element order.
Referenced by std::vector< _Tp, _Alloc >::vector(), std::match_results<
_Bi_iter, _Alloc >::begin(), std::vector< _Tp, _Alloc >::crend(),
std::vector< _Tp, _Alloc >::empty(), std::vector< _Tp, _Alloc
>::erase(), std::vector< _Tp, _Alloc >::insert(), std::operator<(),
std::operator==(), and std::vector< _Tp, _Alloc >::rend().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> size_type
std::vector< _Tp, _Alloc >::capacity () const [inline], [noexcept]
Returns the total number of elements that the vector can hold before
needing to allocate more memory.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::cbegin () const [inline],
[noexcept]
Returns a read-only (constant) iterator that points to the first
element in the vector. Iteration is done in ordinary element order.
Referenced by std::vector< _Tp, _Alloc >::erase(), and std::vector<
_Tp, _Alloc >::insert().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::cend () const [inline],
[noexcept]
Returns a read-only (constant) iterator that points one past the last
element in the vector. Iteration is done in ordinary element order.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::clear () [inline], [noexcept]
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.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::crbegin () const
[inline], [noexcept]
Returns a read-only (constant) reverse iterator that points to the last
element in the vector. Iteration is done in reverse element order.
References std::vector< _Tp, _Alloc >::end().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::crend () const
[inline], [noexcept]
Returns a read-only (constant) reverse iterator that points to one
before the first element in the vector. Iteration is done in reverse
element order.
References std::vector< _Tp, _Alloc >::begin().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> _Tp*
std::vector< _Tp, _Alloc >::data () [inline], [noexcept]
Returns a pointer such that [data(), data() + size()) is a valid range.
For a non-empty vector, data() == &front().
Referenced by std::regex_traits< _Ch_type >::transform_primary().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
template<typename... _Args> iterator std::vector< _Tp, _Alloc
>::emplace (const_iterator __position, _Args &&... __args) [inline]
Inserts an object in vector before specified iterator.
Parameters
__position A const_iterator into the vector.
__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. Note that
this kind of operation could be expensive for a vector and if it is
frequently used the user should consider using std::list.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> bool
std::vector< _Tp, _Alloc >::empty () const [inline], [noexcept]
Returns true if the vector is empty. (Thus begin() would equal end().)
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::end().
Referenced by std::piecewise_constant_distribution< _RealType
>::densities(), std::piecewise_linear_distribution< _RealType
>::densities(), std::match_results< _Bi_iter, _Alloc >::end(),
std::piecewise_constant_distribution< _RealType >::intervals(),
std::piecewise_linear_distribution< _RealType >::intervals(),
std::discrete_distribution< _IntType >::max(),
std::piecewise_constant_distribution< _RealType >::max(),
std::piecewise_linear_distribution< _RealType >::max(),
std::piecewise_constant_distribution< _RealType >::min(),
std::piecewise_linear_distribution< _RealType >::min(),
std::discrete_distribution< _IntType >::probabilities(),
std::match_results< _Bi_iter, _Alloc >::ready(), and
std::match_results< _Bi_iter, _Alloc >::size().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::end () const [inline],
[noexcept]
Returns a read-only (constant) iterator that points one past the last
element in the vector. Iteration is done in ordinary element order.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::end () [inline], [noexcept]
Returns a read/write iterator that points one past the last element in
the vector. Iteration is done in ordinary element order.
Referenced by std::vector< _Tp, _Alloc >::vector(), std::vector< _Tp,
_Alloc >::crbegin(), std::vector< _Tp, _Alloc >::empty(),
std::match_results< _Bi_iter, _Alloc >::end(), std::operator<(),
std::operator==(), std::vector< _Tp, _Alloc >::rbegin(), and
std::vector< _Tp, _Alloc >::resize().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::erase (const_iterator __first,
const_iterator __last) [inline]
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 vector accordingly.
Note This operation could be expensive and if it is frequently used the
user should consider using std::list. The user is also 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.
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::cbegin().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::erase (const_iterator __position) [inline]
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 vector by one.
Note This operation could be expensive and if it is frequently used the
user should consider using std::list. The user is also 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.
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::cbegin().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::front () const [inline],
[noexcept]
Returns a read-only (constant) reference to the data at the first
element of the vector.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> reference
std::vector< _Tp, _Alloc >::front () [inline], [noexcept]
Returns a read/write reference to the data at the first element of the
vector.
Referenced by std::piecewise_constant_distribution< _RealType >::min(),
and std::piecewise_linear_distribution< _RealType >::min().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
allocator_type std::_Vector_base< _Tp, _Alloc >::get_allocator
[inline], [noexcept]
Get a copy of the memory allocation object.
Referenced by std::match_results< _Bi_iter, _Alloc >::get_allocator().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
template<typename _InputIterator , typename =
std::_RequireInputIter<_InputIterator>> iterator std::vector< _Tp,
_Alloc >::insert (const_iterator __position, _InputIterator __first,
_InputIterator __last) [inline]
Inserts a range into the vector.
Parameters
__position A const_iterator into the vector.
__first An input iterator.
__last An input iterator.
Returns
An iterator that points to the inserted data.
This function will insert copies of the data in the range
[__first,__last) into the vector before the location specified by pos.
Note that this kind of operation could be expensive for a vector and if
it is frequently used the user should consider using std::list.
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::cbegin().
template<typename _Tp , typename _Alloc > vector< _Tp, _Alloc >::iterator
vector::insert (const_iterator __position, const value_type & __x)
Inserts given value into vector before specified iterator.
Parameters
__position A const_iterator into the vector.
__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. Note that this kind of operation could be expensive
for a vector and if it is frequently used the user should consider
using std::list.
References std::begin(), and std::end().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::insert (const_iterator __position,
initializer_list< value_type > __l) [inline]
Inserts an initializer_list into the vector.
Parameters
__position An iterator into the vector.
__l An initializer_list.
This function will insert copies of the data in the initializer_list l
into the vector before the location specified by position.
Note that this kind of operation could be expensive for a vector and if
it is frequently used the user should consider using std::list.
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::cbegin().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::insert (const_iterator __position,
size_type __n, const value_type & __x) [inline]
Inserts a number of copies of given data into the vector.
Parameters
__position A const_iterator into the vector.
__n Number of elements to be inserted.
__x Data to be inserted.
Returns
An iterator that points to the inserted data.
This function will insert a specified number of copies of the given
data before the location specified by position.
Note that this kind of operation could be expensive for a vector and if
it is frequently used the user should consider using std::list.
References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp,
_Alloc >::cbegin().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> iterator
std::vector< _Tp, _Alloc >::insert (const_iterator __position,
value_type && __x) [inline]
Inserts given rvalue into vector before specified iterator.
Parameters
__position A const_iterator into the vector.
__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. Note that this kind of operation could be expensive
for a vector and if it is frequently used the user should consider
using std::list.
References std::move().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> size_type
std::vector< _Tp, _Alloc >::max_size () const [inline], [noexcept]
Returns the size() of the largest possible vector.
Referenced by std::match_results< _Bi_iter, _Alloc >::max_size().
template<typename _Tp , typename _Alloc > vector< _Tp, _Alloc > &
vector::operator= (const vector< _Tp, _Alloc > & __x)
Vector assignment operator.
Parameters
__x A vector of identical element and allocator types.
All the elements of __x are copied, but any unused capacity in __x will
not be copied.
Whether the allocator is copied depends on the allocator traits.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> vector&
std::vector< _Tp, _Alloc >::operator= (initializer_list< value_type >
__l) [inline]
Vector list assignment operator.
Parameters
__l An initializer_list.
This function fills a vector with copies of the elements in the
initializer list __l.
Note that the assignment completely changes the vector and that the
resulting vector's size is the same as the number of elements assigned.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> vector&
std::vector< _Tp, _Alloc >::operator= (vector< _Tp, _Alloc > && __x)
[inline], [noexcept]
Vector move assignment operator.
Parameters
__x A vector of identical element and allocator types.
The contents of __x are moved into this vector (without copying, if the
allocators permit it). Afterwards __x is a valid, but unspecified
vector.
Whether the allocator is moved depends on the allocator traits.
References std::move().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::operator[] (size_type __n)
const [inline], [noexcept]
Subscript access to the data contained in the vector.
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().)
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> reference
std::vector< _Tp, _Alloc >::operator[] (size_type __n) [inline],
[noexcept]
Subscript access to the data contained in the vector.
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().)
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::pop_back () [inline], [noexcept]
Removes last element. This is a typical stack operation. It shrinks the
vector 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.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::push_back (const value_type & __x) [inline]
Add data to the end of the vector.
Parameters
__x Data to be added.
This is a typical stack operation. The function creates an element at
the end of the vector and assigns the given data to it. Due to the
nature of a vector this operation can be done in constant time if the
vector has preallocated space available.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::rbegin () const
[inline], [noexcept]
Returns a read-only (constant) reverse iterator that points to the last
element in the vector. Iteration is done in reverse element order.
References std::vector< _Tp, _Alloc >::end().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reverse_iterator std::vector< _Tp, _Alloc >::rbegin () [inline],
[noexcept]
Returns a read/write reverse iterator that points to the last element
in the vector. Iteration is done in reverse element order.
References std::vector< _Tp, _Alloc >::end().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::rend () const
[inline], [noexcept]
Returns a read-only (constant) reverse iterator that points to one
before the first element in the vector. Iteration is done in reverse
element order.
References std::vector< _Tp, _Alloc >::begin().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reverse_iterator std::vector< _Tp, _Alloc >::rend () [inline],
[noexcept]
Returns a read/write reverse iterator that points to one before the
first element in the vector. Iteration is done in reverse element
order.
References std::vector< _Tp, _Alloc >::begin().
template<typename _Tp , typename _Alloc > void vector::reserve (size_type
__n)
Attempt to preallocate enough memory for specified number of elements.
Parameters
__n Number of elements required.
Exceptions
std::length_error If n exceeds max_size().
This function attempts to reserve enough memory for the vector to hold
the specified number of elements. If the number requested is more than
max_size(), length_error is thrown.
The advantage of this function is that if optimal code is a necessity
and the user can determine the number of elements that will be
required, the user can reserve the memory in advance, and thus prevent
a possible reallocation of memory and copying of vector data.
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::resize (size_type __new_size) [inline]
Resizes the vector to the specified number of elements.
Parameters
__new_size Number of elements the vector should contain.
This function will resize the vector to the specified number of
elements. If the number is smaller than the vector's current size the
vector is truncated, otherwise default constructed elements are
appended.
References std::vector< _Tp, _Alloc >::size().
Referenced by __gnu_parallel::__shrink_and_double().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::resize (size_type __new_size, const
value_type & __x) [inline]
Resizes the vector to the specified number of elements.
Parameters
__new_size Number of elements the vector should contain.
__x Data with which new elements should be populated.
This function will resize the vector to the specified number of
elements. If the number is smaller than the vector's current size the
vector is truncated, otherwise the vector is extended and new elements
are populated with given data.
References std::vector< _Tp, _Alloc >::end(), and std::vector< _Tp,
_Alloc >::size().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::shrink_to_fit () [inline]
A non-binding request to reduce capacity() to size().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> size_type
std::vector< _Tp, _Alloc >::size () const [inline], [noexcept]
Returns the number of elements in the vector.
Referenced by __gnu_parallel::__shrink(),
__gnu_parallel::__shrink_and_double(), std::vector< _Tp, _Alloc
>::_M_range_check(), std::match_results< _Bi_iter, _Alloc >::empty(),
__gnu_parallel::list_partition(), std::discrete_distribution< _IntType
>::max(), std::operator==(), std::vector< _Tp, _Alloc >::resize(),
std::match_results< _Bi_iter, _Alloc >::size(), and std::regex_traits<
_Ch_type >::transform_primary().
template<typename _Tp , typename _Alloc = std::allocator<_Tp>> void
std::vector< _Tp, _Alloc >::swap (vector< _Tp, _Alloc > & __x)
[inline], [noexcept]
Swaps data with another vector.
Parameters
__x A vector of the same element and allocator types.
This exchanges the elements between two vectors in constant time.
(Three pointers, so it should be quite fast.) Note that the global
std::swap() function is specialized such that std::swap(v1,v2) will
feed to this function.
Whether the allocators are swapped depends on the allocator traits.
Referenced by std::match_results< _Bi_iter, _Alloc >::swap().
Author
Generated automatically by Doxygen for libstdc++ from the source code.
libstdc++ Sat May 13 202std::vector< _Tp, _Alloc >(3cxx)
Generated by dwww version 1.14 on Sun Apr 20 08:07:51 CEST 2025.