libstdc++
std::vector< _Tp, _Alloc > Class Template Reference
Inheritance diagram for std::vector< _Tp, _Alloc >:
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Public Types

typedef _Alloc allocator_type
 
typedef __gnu_cxx::__normal_iterator< const_pointer, vectorconst_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, vectoriterator
 
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
 
template<typename _InputIterator , typename = std::_RequireInputIter<_InputIterator>>
 vector (_InputIterator __first, _InputIterator __last, const allocator_type &__a=allocator_type())
 
 vector (const allocator_type &__a) noexcept
 
 vector (const vector &__x)
 
 vector (const vector &__x, const allocator_type &__a)
 
 vector (initializer_list< value_type > __l, const allocator_type &__a=allocator_type())
 
 vector (size_type __n, const allocator_type &__a=allocator_type())
 
 vector (size_type __n, const value_type &__value, const allocator_type &__a=allocator_type())
 
 vector (vector &&) noexcept=default
 
 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 >())))
 
 ~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)
 
void assign (initializer_list< value_type > __l)
 
void assign (size_type __n, const value_type &__val)
 
reference at (size_type __n)
 
const_reference at (size_type __n) const
 
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)
 
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)
 
iterator erase (const_iterator __position)
 
const_reference front () const noexcept
 
reference front () noexcept
 
allocator_type get_allocator () const noexcept
 
template<typename _InputIterator , typename = std::_RequireInputIter<_InputIterator>>
iterator insert (const_iterator __position, _InputIterator __first, _InputIterator __last)
 
iterator insert (const_iterator __position, const value_type &__x)
 
iterator insert (const_iterator __position, initializer_list< value_type > __l)
 
iterator insert (const_iterator __position, size_type __n, const value_type &__x)
 
iterator insert (const_iterator __position, value_type &&__x)
 
size_type max_size () const noexcept
 
vectoroperator= (const vector &__x)
 
vectoroperator= (initializer_list< value_type > __l)
 
vectoroperator= (vector &&__x) noexcept(_Alloc_traits::_S_nothrow_move())
 
const_reference operator[] (size_type __n) const noexcept
 
reference operator[] (size_type __n) noexcept
 
void pop_back () noexcept
 
void push_back (const value_type &__x)
 
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)
 
void resize (size_type __new_size)
 
void resize (size_type __new_size, const value_type &__x)
 
void shrink_to_fit ()
 
size_type size () const noexcept
 
void swap (vector &__x) noexcept
 

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
 
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
_TpType of element.
_AllocAllocator 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.

Definition at line 389 of file stl_vector.h.

Constructor & Destructor Documentation

◆ vector() [1/10]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector ( )
default

Creates a vector with no elements.

◆ vector() [2/10]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector ( const allocator_type &  __a)
inlineexplicitnoexcept

Creates a vector with no elements.

Parameters
__aAn allocator object.

Definition at line 497 of file stl_vector.h.

◆ vector() [3/10]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector ( size_type  __n,
const allocator_type &  __a = allocator_type() 
)
inlineexplicit

Creates a vector with default constructed elements.

Parameters
__nThe number of elements to initially create.
__aAn allocator.

This constructor fills the vector with __n default constructed elements.

Definition at line 510 of file stl_vector.h.

◆ vector() [4/10]

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
__nThe number of elements to initially create.
__valueAn element to copy.
__aAn allocator.

This constructor fills the vector with __n copies of __value.

Definition at line 522 of file stl_vector.h.

◆ vector() [5/10]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector ( const vector< _Tp, _Alloc > &  __x)
inline

Vector copy constructor.

Parameters
__xA 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).

Definition at line 553 of file stl_vector.h.

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

◆ vector() [6/10]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector ( vector< _Tp, _Alloc > &&  )
defaultnoexcept

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.

◆ vector() [7/10]

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.

Definition at line 575 of file stl_vector.h.

◆ vector() [8/10]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::vector ( vector< _Tp, _Alloc > &&  __rv,
const allocator_type &  __m 
)
inlinenoexcept

Move constructor with alternative allocator.

Definition at line 607 of file stl_vector.h.

◆ vector() [9/10]

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
__lAn initializer_list.
__aAn 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.

Definition at line 625 of file stl_vector.h.

◆ vector() [10/10]

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
__firstAn input iterator.
__lastAn input iterator.
__aAn 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.

Definition at line 653 of file stl_vector.h.

References std::__iterator_category().

◆ ~vector()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
std::vector< _Tp, _Alloc >::~vector ( )
inlinenoexcept

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 678 of file stl_vector.h.

References std::_Destroy().

Member Function Documentation

◆ _M_allocate_and_copy()

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 
)
inlineprotected

Memory expansion handler. Uses the member allocation function to obtain n bytes of memory, and then copies [first,last) into it.

Definition at line 1508 of file stl_vector.h.

◆ _M_range_check()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
void std::vector< _Tp, _Alloc >::_M_range_check ( size_type  __n) const
inlineprotected

Safety check used only from at().

Definition at line 1070 of file stl_vector.h.

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

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

◆ assign() [1/3]

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
__firstAn input iterator.
__lastAn 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.

Definition at line 768 of file stl_vector.h.

◆ assign() [2/3]

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
__lAn 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.

Definition at line 794 of file stl_vector.h.

◆ assign() [3/3]

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
__nNumber of elements to be assigned.
__valValue 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.

Definition at line 749 of file stl_vector.h.

◆ at() [1/2]

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
__nThe index of the element for which data should be accessed.
Returns
Read/write reference to data.
Exceptions
std::out_of_rangeIf __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.

Definition at line 1092 of file stl_vector.h.

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

◆ at() [2/2]

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
__nThe index of the element for which data should be accessed.
Returns
Read-only (constant) reference to data.
Exceptions
std::out_of_rangeIf __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.

Definition at line 1110 of file stl_vector.h.

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

◆ back() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::back ( ) const
inlinenoexcept

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

Definition at line 1154 of file stl_vector.h.

◆ back() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reference std::vector< _Tp, _Alloc >::back ( )
inlinenoexcept

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

Definition at line 1143 of file stl_vector.h.

Referenced by std::piecewise_constant_distribution< _RealType >::max(), and std::piecewise_linear_distribution< _RealType >::max().

◆ begin() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::begin ( ) const
inlinenoexcept

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

Definition at line 820 of file stl_vector.h.

◆ begin() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
iterator std::vector< _Tp, _Alloc >::begin ( )
inlinenoexcept

◆ capacity()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
size_type std::vector< _Tp, _Alloc >::capacity ( ) const
inlinenoexcept

Returns the total number of elements that the vector can hold before needing to allocate more memory.

Definition at line 998 of file stl_vector.h.

◆ cbegin()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::cbegin ( ) const
inlinenoexcept

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

Definition at line 884 of file stl_vector.h.

Referenced by std::vector< _Tp, _Alloc >::erase(), and std::vector< _Tp, _Alloc >::insert().

◆ cend()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::cend ( ) const
inlinenoexcept

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

Definition at line 893 of file stl_vector.h.

◆ clear()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
void std::vector< _Tp, _Alloc >::clear ( )
inlinenoexcept

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 1498 of file stl_vector.h.

◆ crbegin()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::crbegin ( ) const
inlinenoexcept

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

Definition at line 902 of file stl_vector.h.

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

◆ crend()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::crend ( ) const
inlinenoexcept

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.

Definition at line 911 of file stl_vector.h.

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

◆ data()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
_Tp* std::vector< _Tp, _Alloc >::data ( )
inlinenoexcept

Returns a pointer such that [data(), data() + size()) is a valid range. For a non-empty vector, data() == &front().

Definition at line 1168 of file stl_vector.h.

Referenced by std::regex_traits< _Ch_type >::transform_primary().

◆ emplace()

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
__positionA const_iterator into the vector.
__argsArguments.
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.

Definition at line 1248 of file stl_vector.h.

◆ empty()

◆ end() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_iterator std::vector< _Tp, _Alloc >::end ( ) const
inlinenoexcept

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

Definition at line 838 of file stl_vector.h.

◆ end() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
iterator std::vector< _Tp, _Alloc >::end ( )
inlinenoexcept

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

Definition at line 829 of file stl_vector.h.

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().

◆ erase() [1/2]

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
__firstIterator pointing to the first element to be erased.
__lastIterator 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.

Definition at line 1457 of file stl_vector.h.

References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp, _Alloc >::cbegin().

◆ erase() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
iterator std::vector< _Tp, _Alloc >::erase ( const_iterator  __position)
inline

Remove element at given position.

Parameters
__positionIterator 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.

Definition at line 1430 of file stl_vector.h.

References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp, _Alloc >::cbegin().

◆ front() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::front ( ) const
inlinenoexcept

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

Definition at line 1132 of file stl_vector.h.

◆ front() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reference std::vector< _Tp, _Alloc >::front ( )
inlinenoexcept

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

Definition at line 1121 of file stl_vector.h.

Referenced by std::piecewise_constant_distribution< _RealType >::min(), and std::piecewise_linear_distribution< _RealType >::min().

◆ get_allocator()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
allocator_type std::_Vector_base< _Tp, _Alloc >::get_allocator
inlinenoexcept

Get a copy of the memory allocation object.

Definition at line 284 of file stl_vector.h.

Referenced by std::match_results< _Bi_iter, _Alloc >::get_allocator().

◆ insert() [1/5]

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
__positionA const_iterator into the vector.
__firstAn input iterator.
__lastAn 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.

Definition at line 1379 of file stl_vector.h.

References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp, _Alloc >::cbegin().

◆ insert() [2/5]

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
__positionA const_iterator into the vector.
__xData 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.

Definition at line 130 of file vector.tcc.

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

◆ insert() [3/5]

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
__positionAn iterator into the vector.
__lAn 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.

Definition at line 1310 of file stl_vector.h.

References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp, _Alloc >::cbegin().

◆ insert() [4/5]

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
__positionA const_iterator into the vector.
__nNumber of elements to be inserted.
__xData 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.

Definition at line 1335 of file stl_vector.h.

References std::vector< _Tp, _Alloc >::begin(), and std::vector< _Tp, _Alloc >::cbegin().

◆ insert() [5/5]

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
__positionA const_iterator into the vector.
__xData 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.

Definition at line 1293 of file stl_vector.h.

References std::move().

◆ max_size()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
size_type std::vector< _Tp, _Alloc >::max_size ( ) const
inlinenoexcept

Returns the size() of the largest possible vector.

Definition at line 923 of file stl_vector.h.

Referenced by std::match_results< _Bi_iter, _Alloc >::max_size().

◆ operator=() [1/3]

template<typename _Tp , typename _Alloc >
vector< _Tp, _Alloc > & vector::operator= ( const vector< _Tp, _Alloc > &  __x)

Vector assignment operator.

Parameters
__xA 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.

Definition at line 198 of file vector.tcc.

References std::__addressof().

◆ operator=() [2/3]

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
__lAn 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.

Definition at line 730 of file stl_vector.h.

◆ operator=() [3/3]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
vector& std::vector< _Tp, _Alloc >::operator= ( vector< _Tp, _Alloc > &&  __x)
inlinenoexcept

Vector move assignment operator.

Parameters
__xA 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.

Definition at line 709 of file stl_vector.h.

References std::move().

◆ operator[]() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reference std::vector< _Tp, _Alloc >::operator[] ( size_type  __n) const
inlinenoexcept

Subscript access to the data contained in the vector.

Parameters
__nThe 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 1061 of file stl_vector.h.

◆ operator[]() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reference std::vector< _Tp, _Alloc >::operator[] ( size_type  __n)
inlinenoexcept

Subscript access to the data contained in the vector.

Parameters
__nThe 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 1043 of file stl_vector.h.

◆ pop_back()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
void std::vector< _Tp, _Alloc >::pop_back ( )
inlinenoexcept

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.

Definition at line 1225 of file stl_vector.h.

◆ push_back()

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
__xData 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.

Definition at line 1187 of file stl_vector.h.

◆ rbegin() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::rbegin ( ) const
inlinenoexcept

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

Definition at line 856 of file stl_vector.h.

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

◆ rbegin() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reverse_iterator std::vector< _Tp, _Alloc >::rbegin ( )
inlinenoexcept

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

Definition at line 847 of file stl_vector.h.

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

◆ rend() [1/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
const_reverse_iterator std::vector< _Tp, _Alloc >::rend ( ) const
inlinenoexcept

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.

Definition at line 874 of file stl_vector.h.

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

◆ rend() [2/2]

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
reverse_iterator std::vector< _Tp, _Alloc >::rend ( )
inlinenoexcept

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

Definition at line 865 of file stl_vector.h.

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

◆ reserve()

template<typename _Tp , typename _Alloc >
void vector::reserve ( size_type  __n)

Attempt to preallocate enough memory for specified number of elements.

Parameters
__nNumber of elements required.
Exceptions
std::length_errorIf 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.

Definition at line 66 of file vector.tcc.

◆ resize() [1/2]

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_sizeNumber 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.

Definition at line 937 of file stl_vector.h.

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

Referenced by __gnu_parallel::__shrink_and_double().

◆ resize() [2/2]

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_sizeNumber of elements the vector should contain.
__xData 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.

Definition at line 957 of file stl_vector.h.

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

◆ shrink_to_fit()

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().

Definition at line 989 of file stl_vector.h.

◆ size()

◆ swap()

template<typename _Tp , typename _Alloc = std::allocator<_Tp>>
void std::vector< _Tp, _Alloc >::swap ( vector< _Tp, _Alloc > &  __x)
inlinenoexcept

Swaps data with another vector.

Parameters
__xA 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.

Definition at line 1480 of file stl_vector.h.

Referenced by std::match_results< _Bi_iter, _Alloc >::swap().


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