- Generated by
1.8.6
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libstdc++
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Public Types | |
| typedef _Alloc | allocator_type |
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typedef __gnu_cxx::__normal_iterator < const_pointer, vector > | const_iterator |
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typedef _Alloc_traits::const_pointer | const_pointer |
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typedef _Alloc_traits::const_reference | const_reference |
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typedef std::reverse_iterator < const_iterator > | const_reverse_iterator |
| typedef ptrdiff_t | difference_type |
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typedef __gnu_cxx::__normal_iterator < pointer, vector > | iterator |
| typedef _Base::pointer | pointer |
| typedef _Alloc_traits::reference | reference |
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typedef std::reverse_iterator < iterator > | reverse_iterator |
| typedef size_t | size_type |
| typedef _Tp | value_type |
Public Member Functions | |
| vector () | |
| vector (const allocator_type &__a) | |
| 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 (const vector &__x) | |
| vector (vector &&__x) noexcept | |
| vector (const vector &__x, const allocator_type &__a) | |
| vector (vector &&__rv, const allocator_type &__m) | |
| vector (initializer_list< value_type > __l, const allocator_type &__a=allocator_type()) | |
| template<typename _InputIterator , typename = std::_RequireInputIter<_InputIterator>> | |
| vector (_InputIterator __first, _InputIterator __last, const allocator_type &__a=allocator_type()) | |
| ~vector () noexcept | |
| void | assign (size_type __n, const value_type &__val) |
| template<typename _InputIterator , typename = std::_RequireInputIter<_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 () noexcept |
| const_iterator | begin () const 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 |
| _Tp * | data () noexcept |
| const _Tp * | data () const noexcept |
| template<typename... _Args> | |
| vector< _Tp, _Alloc >::iterator | emplace (iterator __position, _Args &&...__args) |
| template<typename... _Args> | |
| iterator | emplace (iterator __position, _Args &&...__args) |
| template<typename... _Args> | |
| void | emplace_back (_Args &&...__args) |
| bool | empty () const noexcept |
| iterator | end () noexcept |
| const_iterator | end () const noexcept |
| iterator | erase (iterator __position) |
| iterator | erase (iterator __first, iterator __last) |
| reference | front () |
| const_reference | front () const |
| iterator | insert (iterator __position, const value_type &__x) |
| iterator | insert (iterator __position, value_type &&__x) |
| void | insert (iterator __position, initializer_list< value_type > __l) |
| void | insert (iterator __position, size_type __n, const value_type &__x) |
| template<typename _InputIterator , typename = std::_RequireInputIter<_InputIterator>> | |
| void | insert (iterator __position, _InputIterator __first, _InputIterator __last) |
| size_type | max_size () const noexcept |
| vector & | operator= (const vector &__x) |
| vector & | operator= (vector &&__x) noexcept(_Alloc_traits::_S_nothrow_move()) |
| vector & | operator= (initializer_list< value_type > __l) |
| reference | operator[] (size_type __n) |
| const_reference | operator[] (size_type __n) const |
| void | pop_back () |
| void | push_back (const value_type &__x) |
| void | push_back (value_type &&__x) |
| reverse_iterator | rbegin () noexcept |
| const_reverse_iterator | rbegin () const noexcept |
| reverse_iterator | rend () noexcept |
| const_reverse_iterator | rend () const 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(_Alloc_traits::_S_nothrow_swap()) |
Protected Member Functions | |
| pointer | _M_allocate (size_t __n) |
| template<typename _ForwardIterator > | |
| pointer | _M_allocate_and_copy (size_type __n, _ForwardIterator __first, _ForwardIterator __last) |
| 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) |
| size_type | _M_check_len (size_type __n, const char *__s) const |
| 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> | |
| void | _M_emplace_back_aux (_Args &&...__args) |
| void | _M_erase_at_end (pointer __pos) |
| 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) |
| _Tp_alloc_type & | _M_get_Tp_allocator () noexcept |
| const _Tp_alloc_type & | _M_get_Tp_allocator () const noexcept |
| template<typename _Integer > | |
| void | _M_initialize_dispatch (_Integer __n, _Integer __value, __true_type) |
| template<typename _InputIterator > | |
| void | _M_initialize_dispatch (_InputIterator __first, _InputIterator __last, __false_type) |
| template<typename... _Args> | |
| void | _M_insert_aux (iterator __position, _Args &&...__args) |
| template<typename _Integer > | |
| void | _M_insert_dispatch (iterator __pos, _Integer __n, _Integer __val, __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_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 _InputIterator > | |
| void | _M_range_insert (iterator __pos, _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) |
| bool | _M_shrink_to_fit () |
| allocator_type | get_allocator () const noexcept |
Protected Attributes | |
| _Vector_impl | _M_impl |
A standard container which offers fixed time access to individual elements in any order.
| _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.
Definition at line 210 of file stl_vector.h.
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inline |
Default constructor creates no elements.
Definition at line 248 of file stl_vector.h.
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inlineexplicit |
Creates a vector with no elements.
| __a | An allocator object. |
Definition at line 256 of file stl_vector.h.
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inlineexplicit |
Creates a vector with default constructed elements.
| __n | The number of elements to initially create. |
| __a | An allocator. |
This constructor fills the vector with __n default constructed elements.
Definition at line 269 of file stl_vector.h.
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inline |
Creates a vector with copies of an exemplar element.
| __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.
Definition at line 281 of file stl_vector.h.
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inline |
Vector copy constructor.
| __x | A vector of identical element and allocator types. |
The newly-created vector uses a copy of the allocation object used by __x. All the elements of __x are copied, but any extra memory in __x (for fast expansion) will not be copied.
Definition at line 310 of file stl_vector.h.
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inlinenoexcept |
Vector move constructor.
| __x | A vector of identical element and allocator types. |
The newly-created vector contains the exact contents of __x. The contents of __x are a valid, but unspecified vector.
Definition at line 327 of file stl_vector.h.
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inline |
Copy constructor with alternative allocator.
Definition at line 331 of file stl_vector.h.
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inline |
Move constructor with alternative allocator.
Definition at line 340 of file stl_vector.h.
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inline |
Builds a vector from an initializer list.
| __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.
Definition at line 364 of file stl_vector.h.
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inline |
Builds a vector from a range.
| __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.
Definition at line 392 of file stl_vector.h.
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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 414 of file stl_vector.h.
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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 1135 of file stl_vector.h.
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inlineprotected |
Safety check used only from at().
Definition at line 791 of file stl_vector.h.
Referenced by std::vector< _State >::at().
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inline |
Assigns a given value to a vector.
| __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. Old data may be lost.
Definition at line 479 of file stl_vector.h.
Referenced by std::vector< _State >::assign(), and std::vector< _State >::operator=().
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inline |
Assigns a range to a vector.
| __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. Old data may be lost.
Definition at line 498 of file stl_vector.h.
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inline |
Assigns an initializer list to a vector.
| __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. Old data may be lost.
Definition at line 524 of file stl_vector.h.
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inline |
Provides access to the data contained in the vector.
| __n | The index of the element for which data should be accessed. |
| 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.
Definition at line 810 of file stl_vector.h.
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inline |
Provides access to the data contained in the vector.
| __n | The index of the element for which data should be accessed. |
| 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.
Definition at line 828 of file stl_vector.h.
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inline |
Returns a read/write reference to the data at the last element of the vector.
Definition at line 855 of file stl_vector.h.
Referenced by std::piecewise_constant_distribution< _RealType >::max(), and std::piecewise_linear_distribution< _RealType >::max().
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inline |
Returns a read-only (constant) reference to the data at the last element of the vector.
Definition at line 863 of file stl_vector.h.
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inlinenoexcept |
Returns a read/write iterator that points to the first element in the vector. Iteration is done in ordinary element order.
Definition at line 538 of file stl_vector.h.
Referenced by std::vector< _State >::crend(), std::vector< _State >::empty(), std::vector< _State >::front(), __gnu_parallel::multiseq_partition(), __gnu_parallel::multiseq_selection(), __gnu_parallel::multiway_merge_exact_splitting(), std::operator<(), std::vector< _Tp, _Alloc >::operator=(), std::operator==(), std::vector< _State >::rend(), and std::vector< _State >::vector().
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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 547 of file stl_vector.h.
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inlinenoexcept |
Returns the total number of elements that the vector can hold before needing to allocate more memory.
Definition at line 725 of file stl_vector.h.
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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 611 of file stl_vector.h.
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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 620 of file stl_vector.h.
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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 1125 of file stl_vector.h.
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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 629 of file stl_vector.h.
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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 638 of file stl_vector.h.
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inlinenoexcept |
Returns a pointer such that [data(), data() + size()) is a valid range. For a non-empty vector, data() == &front().
Definition at line 878 of file stl_vector.h.
| iterator std::vector< _Tp, _Alloc >::emplace | ( | iterator | __position, |
| _Args &&... | __args | ||
| ) |
Inserts an object in vector before specified iterator.
| __position | An iterator into the vector. |
| __args | Arguments. |
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.
Referenced by std::vector< _State >::insert().
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inlinenoexcept |
Returns true if the vector is empty. (Thus begin() would equal end().)
Definition at line 734 of file stl_vector.h.
Referenced by std::piecewise_constant_distribution< _RealType >::densities(), std::piecewise_linear_distribution< _RealType >::densities(), 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(), and std::discrete_distribution< _IntType >::probabilities().
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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 556 of file stl_vector.h.
Referenced by std::vector< _State >::back(), std::vector< _State >::crbegin(), std::vector< _State >::empty(), __gnu_parallel::multiseq_partition(), __gnu_parallel::multiseq_selection(), __gnu_parallel::multiway_merge_exact_splitting(), std::operator<(), std::vector< _Tp, _Alloc >::operator=(), std::operator==(), std::vector< _State >::push_back(), std::vector< _State >::rbegin(), std::vector< _State >::resize(), and std::vector< _State >::vector().
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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 565 of file stl_vector.h.
| vector< _Tp, _Alloc >::iterator vector::erase | ( | iterator | __position | ) |
Remove element at given position.
| __position | Iterator pointing to element to be erased. |
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 135 of file vector.tcc.
References std::end().
| vector< _Tp, _Alloc >::iterator vector::erase | ( | iterator | __first, |
| iterator | __last | ||
| ) |
Remove a range of elements.
| __first | Iterator pointing to the first element to be erased. |
| __last | Iterator pointing to one past the last element to be erased. |
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 147 of file vector.tcc.
References std::end().
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inline |
Returns a read/write reference to the data at the first element of the vector.
Definition at line 839 of file stl_vector.h.
Referenced by std::vector< _State >::data(), std::piecewise_constant_distribution< _RealType >::min(), and std::piecewise_linear_distribution< _RealType >::min().
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inline |
Returns a read-only (constant) reference to the data at the first element of the vector.
Definition at line 847 of file stl_vector.h.
| vector< _Tp, _Alloc >::iterator vector::insert | ( | iterator | __position, |
| const value_type & | __x | ||
| ) |
Inserts given value into vector before specified iterator.
| __position | An iterator into the vector. |
| __x | Data to be inserted. |
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 108 of file vector.tcc.
References std::begin(), and std::end().
Referenced by std::vector< _State >::insert(), and std::vector< _State >::resize().
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inline |
Inserts given rvalue into vector before specified iterator.
| __position | An iterator into the vector. |
| __x | Data to be inserted. |
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 988 of file stl_vector.h.
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inline |
Inserts an initializer_list into the vector.
| __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.
Definition at line 1005 of file stl_vector.h.
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inline |
Inserts a number of copies of given data into the vector.
| __position | An iterator into the vector. |
| __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.
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 1023 of file stl_vector.h.
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inline |
Inserts a range into the vector.
| __position | An iterator into the vector. |
| __first | An input iterator. |
| __last | An input iterator. |
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 1044 of file stl_vector.h.
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inlinenoexcept |
Returns the size() of the largest possible vector.
Definition at line 650 of file stl_vector.h.
| vector< _Tp, _Alloc > & vector::operator= | ( | const vector< _Tp, _Alloc > & | __x | ) |
Vector assignment operator.
| __x | A vector of identical element and allocator types. |
All the elements of __x are copied, but any extra memory in __x (for fast expansion) will not be copied. Unlike the copy constructor, the allocator object is not copied.
Definition at line 161 of file vector.tcc.
References std::_Destroy(), std::begin(), std::vector< _Tp, _Alloc >::begin(), std::end(), std::vector< _Tp, _Alloc >::end(), std::vector< _Tp, _Alloc >::size(), and std::size().
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inlinenoexcept |
Vector move assignment operator.
| __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). __x is a valid, but unspecified vector.
Definition at line 439 of file stl_vector.h.
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inline |
Vector list assignment operator.
| __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. Old data may be lost.
Definition at line 461 of file stl_vector.h.
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inline |
Subscript access to the data contained in the vector.
| __n | The index of the element for which data should be accessed. |
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 770 of file stl_vector.h.
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inline |
Subscript access to the data contained in the vector.
| __n | The index of the element for which data should be accessed. |
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 785 of file stl_vector.h.
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inline |
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 937 of file stl_vector.h.
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inline |
Add data to the end of the vector.
| __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.
Definition at line 901 of file stl_vector.h.
Referenced by __gnu_parallel::multiseq_partition(), and __gnu_parallel::multiseq_selection().
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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 574 of file stl_vector.h.
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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 583 of file stl_vector.h.
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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 592 of file stl_vector.h.
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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 601 of file stl_vector.h.
| void vector::reserve | ( | size_type | __n | ) |
Attempt to preallocate enough memory for specified number of elements.
| __n | Number of elements required. |
| 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.
Definition at line 66 of file vector.tcc.
References std::_Destroy(), and std::size().
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inline |
Resizes the vector to the specified number of elements.
| __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.
Definition at line 664 of file stl_vector.h.
Referenced by __gnu_parallel::__shrink_and_double(), and __gnu_parallel::multiway_merge_exact_splitting().
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inline |
Resizes the vector to the specified number of elements.
| __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.
Definition at line 684 of file stl_vector.h.
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inline |
A non-binding request to reduce capacity() to size().
Definition at line 716 of file stl_vector.h.
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inlinenoexcept |
Returns the number of elements in the vector.
Definition at line 645 of file stl_vector.h.
Referenced by __gnu_parallel::__shrink(), __gnu_parallel::__shrink_and_double(), std::vector< _State >::_M_range_check(), __gnu_parallel::list_partition(), std::discrete_distribution< _IntType >::max(), std::vector< _Tp, _Alloc >::operator=(), std::operator==(), and std::vector< _State >::resize().
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inlinenoexcept |
Swaps data with another vector.
| __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.
Definition at line 1108 of file stl_vector.h.
Referenced by std::swap().
1.8.6