Provided by: libstdc++-13-doc_13.2.0-23ubuntu4_all bug

NAME

       std::list< _Tp, _Alloc > - A standard container with linear time access to elements, and
       fixed time insertion/deletion at any point in the sequence.

SYNOPSIS

       #include <list>

       Inherits std::_List_base< _Tp, _Alloc >.

   Public Types
       typedef _Alloc allocator_type
       typedef _List_const_iterator< _Tp > const_iterator
       typedef _Tp_alloc_traits::const_pointer const_pointer
       typedef _Tp_alloc_traits::const_reference const_reference
       typedef std::reverse_iterator< const_iterator > const_reverse_iterator
       typedef ptrdiff_t difference_type
       typedef _List_iterator< _Tp > iterator
       typedef _Tp_alloc_traits::pointer pointer
       typedef _Tp_alloc_traits::reference reference
       typedef std::reverse_iterator< iterator > reverse_iterator
       typedef size_t size_type
       typedef _Tp value_type

   Public Member Functions
       list ()=default
           Creates a list with no elements.
       template<typename _InputIterator , typename  = std::_RequireInputIter<_InputIterator>>
           list (_InputIterator __first, _InputIterator __last, const allocator_type
           &__a=allocator_type())
           Builds a list from a range.
       list (const allocator_type &__a) noexcept
           Creates a list with no elements.
       list (const list &__x)
           List copy constructor.
       list (const list &__x, const __type_identity_t< allocator_type > &__a)
       list (initializer_list< value_type > __l, const allocator_type &__a=allocator_type())
           Builds a list from an initializer_list.
       list (list &&)=default
           List move constructor.
       list (list &&__x, const __type_identity_t< allocator_type > &__a)
           noexcept(_Node_alloc_traits::_S_always_equal())
       list (size_type __n, const allocator_type &__a=allocator_type())
           Creates a list with default constructed elements.
       list (size_type __n, const value_type &__value, const allocator_type
           &__a=allocator_type())
           Creates a list with copies of an exemplar element.
       ~list ()=default
       template<typename _InputIterator , typename  = std::_RequireInputIter<_InputIterator>>
           void assign (_InputIterator __first, _InputIterator __last)
           Assigns a range to a list.
       void assign (initializer_list< value_type > __l)
           Assigns an initializer_list to a list.
       void assign (size_type __n, const value_type &__val)
           Assigns a given value to a list.
       const_reference back () const noexcept
       reference back () noexcept
       const_iterator begin () const noexcept
       iterator begin () 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
       template<typename... _Args> iterator emplace (const_iterator __position, _Args &&...
           __args)
           Constructs object in list before specified iterator.
       template<typename... _Args> reference emplace_back (_Args &&... __args)
       template<typename... _Args> reference emplace_front (_Args &&... __args)
       bool empty () const noexcept
       const_iterator end () const noexcept
       iterator end () noexcept
       iterator erase (const_iterator __first, const_iterator __last) noexcept
           Remove a range of elements.
       iterator erase (const_iterator __position) noexcept
           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.
       iterator insert (const_iterator __p, initializer_list< value_type > __l)
           Inserts the contents of an initializer_list into list before specified const_iterator.
       template<typename _InputIterator , typename  = std::_RequireInputIter<_InputIterator>>
           iterator insert (const_iterator __position, _InputIterator __first, _InputIterator
           __last)
           Inserts a range into the list.
       iterator insert (const_iterator __position, const value_type &__x)
           Inserts given value into list before specified iterator.
       iterator insert (const_iterator __position, size_type __n, const value_type &__x)
           Inserts a number of copies of given data into the list.
       iterator insert (const_iterator __position, value_type &&__x)
           Inserts given rvalue into list before specified iterator.
       size_type max_size () const noexcept
       void merge (list &&__x)
           Merge sorted lists.
       template<typename _StrictWeakOrdering > void merge (list &&__x, _StrictWeakOrdering
           __comp)
           Merge sorted lists according to comparison function.
       void merge (list &__x)
       template<typename _StrictWeakOrdering > void merge (list &__x, _StrictWeakOrdering __comp)
       list & operator= (const list &__x)
           List assignment operator.
       list & operator= (initializer_list< value_type > __l)
           List initializer list assignment operator.
       list & operator= (list &&__x) noexcept(_Node_alloc_traits::_S_nothrow_move())
           List move assignment operator.
       void pop_back () noexcept
           Removes last element.
       void pop_front () noexcept
           Removes first element.
       void push_back (const value_type &__x)
           Add data to the end of the list.
       void push_back (value_type &&__x)
       void push_front (const value_type &__x)
           Add data to the front of the list.
       void push_front (value_type &&__x)
       const_reverse_iterator rbegin () const noexcept
       reverse_iterator rbegin () noexcept
       __remove_return_type remove (const _Tp &__value)
           Remove all elements equal to value.
       template<typename _Predicate > __remove_return_type remove_if (_Predicate)
           Remove all elements satisfying a predicate.
       const_reverse_iterator rend () const noexcept
       reverse_iterator rend () noexcept
       void resize (size_type __new_size)
           Resizes the list to the specified number of elements.
       void resize (size_type __new_size, const value_type &__x)
           Resizes the list to the specified number of elements.
       void reverse () noexcept
           Reverse the elements in list.
       size_type size () const noexcept
       void sort ()
           Sort the elements.
       template<typename _StrictWeakOrdering > void sort (_StrictWeakOrdering)
           Sort the elements according to comparison function.
       void splice (const_iterator __position, list &&__x) noexcept
           Insert contents of another list.
       void splice (const_iterator __position, list &&__x, const_iterator __first, const_iterator
           __last) noexcept
           Insert range from another list.
       void splice (const_iterator __position, list &&__x, const_iterator __i) noexcept
           Insert element from another list.
       void splice (const_iterator __position, list &__x) noexcept
       void splice (const_iterator __position, list &__x, const_iterator __first, const_iterator
           __last) noexcept
           Insert range from another list.
       void splice (const_iterator __position, list &__x, const_iterator __i) noexcept
           Insert element from another list.
       void swap (list &__x) noexcept
           Swaps data with another list.
       __remove_return_type unique ()
           Remove consecutive duplicate elements.
       template<typename _BinaryPredicate > __remove_return_type unique (_BinaryPredicate)
           Remove consecutive elements satisfying a predicate.

   Protected Types
       typedef _List_node< _Tp > _Node

   Protected Member Functions
       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)
       void _M_check_equal_allocators (const list &__x) noexcept
       void _M_clear () noexcept
       template<typename... _Args> _Node * _M_create_node (_Args &&... __args)
       void _M_dec_size (size_t)
       void _M_default_append (size_type __n)
       void _M_default_initialize (size_type __n)
       size_t _M_distance (const void *, const void *) const
       void _M_erase (iterator __position) noexcept
       void _M_fill_assign (size_type __n, const value_type &__val)
       void _M_fill_initialize (size_type __n, const value_type &__x)
       _Node_alloc_traits::pointer _M_get_node ()
       const _Node_alloc_type & _M_get_Node_allocator () const noexcept
       _Node_alloc_type & _M_get_Node_allocator () noexcept
       size_t _M_get_size () const
       void _M_inc_size (size_t)
       void _M_init () noexcept
       template<typename _InputIterator > void _M_initialize_dispatch (_InputIterator __first,
           _InputIterator __last, __false_type)
       template<typename _Integer > void _M_initialize_dispatch (_Integer __n, _Integer __x,
           __true_type)
       template<typename... _Args> void _M_insert (iterator __position, _Args &&... __args)
       void _M_move_assign (list &&__x, false_type)
       void _M_move_assign (list &&__x, true_type) noexcept
       void _M_move_nodes (_List_base &&__x)
       size_t _M_node_count () const
       void _M_put_node (typename _Node_alloc_traits::pointer __p) noexcept
       const_iterator _M_resize_pos (size_type &__new_size) const
       void _M_set_size (size_t)
       void _M_transfer (iterator __position, iterator __first, iterator __last)

   Static Protected Member Functions
       static size_t _S_distance (const __detail::_List_node_base *__first, const
           __detail::_List_node_base *__last)
       static size_t _S_distance (const_iterator, const_iterator)

   Protected Attributes
       _List_impl _M_impl

Detailed Description

   template<typename _Tp, typename _Alloc = std::allocator<_Tp>>
       class std::list< _Tp, _Alloc >"A standard container with linear time access to elements,
       and fixed time insertion/deletion at any point in the sequence.

       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 at and operator[].

       This is a doubly linked list. Traversal up and down the list requires linear time, but
       adding and removing elements (or nodes) is done in constant time, regardless of where the
       change takes place. Unlike std::vector and std::deque, random-access iterators are not
       provided, so subscripting ( [] ) access is not allowed. For algorithms which only need
       sequential access, this lack makes no difference.

       Also unlike the other standard containers, std::list provides specialized algorithms
       unique to linked lists, such as splicing, sorting, and in-place reversal.

       A couple points on memory allocation for list<Tp>:

       First, we never actually allocate a Tp, we allocate List_node<Tp>'s and trust [20.1.5]/4
       to DTRT. This is to ensure that after elements from list<X,Alloc1> are spliced into
       list<X,Alloc2>, destroying the memory of the second list is a valid operation, i.e.,
       Alloc1 giveth and Alloc2 taketh away.

       Second, a list conceptually represented as

       A <---> B <---> C <---> D

        is actually circular; a link exists between A and D. The list class holds (as its only
       data member) a private list::iterator pointing to D, not to A! To get to the head of the
       list, we start at the tail and move forward by one. When this member iterator's
       next/previous pointers refer to itself, the list is empty.

Constructor & Destructor Documentation

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       () [default]
       Creates a list with no elements.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       (const allocator_type & __a) [inline],  [explicit],  [noexcept]
       Creates a list with no elements.

       Parameters
           __a An allocator object.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       (size_type __n, const allocator_type & __a = allocator_type()) [inline],  [explicit]
       Creates a list with default constructed elements.

       Parameters
           __n The number of elements to initially create.
           __a An allocator object.

       This constructor fills the list with __n default constructed elements.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       (size_type __n, const value_type & __value, const allocator_type & __a = allocator_type())
       [inline]
       Creates a list with copies of an exemplar element.

       Parameters
           __n The number of elements to initially create.
           __value An element to copy.
           __a An allocator object.

       This constructor fills the list with __n copies of __value.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       (const list< _Tp, _Alloc > & __x) [inline]
       List copy constructor.

       Parameters
           __x A list of identical element and allocator types.

       The newly-created list uses a copy of the allocation object used by __x (unless the
       allocator traits dictate a different object).

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       (list< _Tp, _Alloc > &&) [default]
       List move constructor. The newly-created list contains the exact contents of the moved
       instance. The contents of the moved instance are a valid, but unspecified list.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc >::list
       (initializer_list< value_type > __l, const allocator_type & __a = allocator_type())
       [inline]
       Builds a list from an initializer_list.

       Parameters
           __l An initializer_list of value_type.
           __a An allocator object.

       Create a list consisting of copies of the elements in the initializer_list __l. This is
       linear in __l.size().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> template<typename
       _InputIterator , typename  = std::_RequireInputIter<_InputIterator>> std::list< _Tp,
       _Alloc >::list (_InputIterator __first, _InputIterator __last, const allocator_type & __a
       = allocator_type()) [inline]
       Builds a list from a range.

       Parameters
           __first An input iterator.
           __last An input iterator.
           __a An allocator object.

       Create a list consisting of copies of the elements from [__first,__last). This is linear
       in N (where N is distance(__first,__last)).

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> std::list< _Tp, _Alloc
       >::~list () [default]
       No explicit dtor needed as the _Base dtor takes care of things. The _Base 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.

Member Function Documentation

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> template<typename... _Args>
       _Node * std::list< _Tp, _Alloc >::_M_create_node (_Args &&... __args) [inline],
       [protected]
       Parameters
           __args An instance of user data.

       Allocates space for a new node and constructs a copy of __args in it.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> template<typename
       _InputIterator , typename  = std::_RequireInputIter<_InputIterator>> void std::list< _Tp,
       _Alloc >::assign (_InputIterator __first, _InputIterator __last) [inline]
       Assigns a range to a list.

       Parameters
           __first An input iterator.
           __last An input iterator.

       This function fills a list with copies of the elements in the range [__first,__last).

       Note that the assignment completely changes the list and that the resulting list's size is
       the same as the number of elements assigned.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::assign (initializer_list< value_type > __l) [inline]
       Assigns an initializer_list to a list.

       Parameters
           __l An initializer_list of value_type.

       Replace the contents of the list with copies of the elements in the initializer_list __l.
       This is linear in __l.size().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::assign (size_type __n, const value_type & __val) [inline]
       Assigns a given value to a list.

       Parameters
           __n Number of elements to be assigned.
           __val Value to be assigned.

       This function fills a list with __n copies of the given value. Note that the assignment
       completely changes the list and that the resulting list's size is the same as the number
       of elements assigned.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_reference std::list<
       _Tp, _Alloc >::back () const [inline],  [noexcept]
       Returns a read-only (constant) reference to the data at the last element of the list.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> reference std::list< _Tp,
       _Alloc >::back () [inline],  [noexcept]
       Returns a read/write reference to the data at the last element of the list.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_iterator std::list< _Tp,
       _Alloc >::begin () const [inline],  [noexcept]
       Returns a read-only (constant) iterator that points to the first element in the list.
       Iteration is done in ordinary element order.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> iterator std::list< _Tp,
       _Alloc >::begin () [inline],  [noexcept]
       Returns a read/write iterator that points to the first element in the list. Iteration is
       done in ordinary element order.

       Referenced by std::list< _Tp, _Alloc >::list(), std::list< _Tp, _Alloc >::crend(),
       std::list< _Tp, _Alloc >::front(), std::list< _Tp, _Alloc >::front(), std::list< _Tp,
       _Alloc >::merge(), std::list< _Tp, _Alloc >::merge(), std::list< _Tp, _Alloc
       >::operator=(), std::list< _Tp, _Alloc >::pop_front(), std::list< _Tp, _Alloc
       >::push_front(), std::list< _Tp, _Alloc >::rend(), std::list< _Tp, _Alloc >::rend(), and
       std::list< _Tp, _Alloc >::splice().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_iterator std::list< _Tp,
       _Alloc >::cbegin () const [inline],  [noexcept]
       Returns a read-only (constant) iterator that points to the first element in the list.
       Iteration is done in ordinary element order.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_iterator std::list< _Tp,
       _Alloc >::cend () const [inline],  [noexcept]
       Returns a read-only (constant) iterator that points one past the last element in the list.
       Iteration is done in ordinary element order.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _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::list< _Tp, _Alloc >::crbegin () const [inline],  [noexcept]
       Returns a read-only (constant) reverse iterator that points to the last element in the
       list. Iteration is done in reverse element order.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_reverse_iterator
       std::list< _Tp, _Alloc >::crend () const [inline],  [noexcept]
       Returns a read-only (constant) reverse iterator that points to one before the first
       element in the list. Iteration is done in reverse element order.

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

   template<typename _Tp , typename _Alloc > template<typename... _Args> list< _Tp, _Alloc
       >::iterator list::emplace (const_iterator __position, _Args &&... __args)
       Constructs object in list before specified iterator.

       Parameters
           __position A const_iterator into the list.
           __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. Due to the nature of a list
       this operation can be done in constant time, and does not invalidate iterators and
       references.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> bool std::list< _Tp, _Alloc
       >::empty () const [inline],  [noexcept]
       Returns true if the list is empty. (Thus begin() would equal end().)

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_iterator std::list< _Tp,
       _Alloc >::end () const [inline],  [noexcept]
       Returns a read-only (constant) iterator that points one past the last element in the list.
       Iteration is done in ordinary element order.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> iterator std::list< _Tp,
       _Alloc >::end () [inline],  [noexcept]
       Returns a read/write iterator that points one past the last element in the list. Iteration
       is done in ordinary element order.

       Referenced by std::list< _Tp, _Alloc >::list(), std::list< _Tp, _Alloc >::back(),
       std::list< _Tp, _Alloc >::back(), std::list< _Tp, _Alloc >::crbegin(), std::list< _Tp,
       _Alloc >::merge(), std::list< _Tp, _Alloc >::merge(), std::list< _Tp, _Alloc
       >::operator=(), std::list< _Tp, _Alloc >::push_back(), std::list< _Tp, _Alloc >::rbegin(),
       std::list< _Tp, _Alloc >::rbegin(), and std::list< _Tp, _Alloc >::splice().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> iterator std::list< _Tp,
       _Alloc >::erase (const_iterator __first, const_iterator __last) [inline],  [noexcept]
       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 list
       accordingly.

       This operation is linear time in the size of the range and only invalidates
       iterators/references to the element being removed. 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::list< _Tp, _Alloc >::erase().

   template<typename _Tp , typename _Alloc > list< _Tp, _Alloc >::iterator list::erase
       (const_iterator __position) [noexcept]
       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 list by
       one.

       Due to the nature of a list this operation can be done in constant time, and only
       invalidates iterators/references to the element being removed. 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.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_reference std::list<
       _Tp, _Alloc >::front () const [inline],  [noexcept]
       Returns a read-only (constant) reference to the data at the first element of the list.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> reference std::list< _Tp,
       _Alloc >::front () [inline],  [noexcept]
       Returns a read/write reference to the data at the first element of the list.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> allocator_type std::list< _Tp,
       _Alloc >::get_allocator () const [inline],  [noexcept]
       Get a copy of the memory allocation object.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> iterator std::list< _Tp,
       _Alloc >::insert (const_iterator __p, initializer_list< value_type > __l) [inline]
       Inserts the contents of an initializer_list into list before specified const_iterator.

       Parameters
           __p A const_iterator into the list.
           __l An initializer_list of value_type.

       Returns
           An iterator pointing to the first element inserted (or __position).

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

       This operation is linear in the number of elements inserted and does not invalidate
       iterators and references.

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

   template<typename _Tp , typename _Alloc > template<typename _InputIterator , typename > list<
       _Tp, _Alloc >::iterator list::insert (const_iterator __position, _InputIterator __first,
       _InputIterator __last)
       Inserts a range into the list.

       Parameters
           __position A const_iterator into the list.
           __first An input iterator.
           __last An input iterator.

       Returns
           An iterator pointing to the first element inserted (or __position).

       This function will insert copies of the data in the range [first,last) into the list
       before the location specified by position.

       This operation is linear in the number of elements inserted and does not invalidate
       iterators and references.

   template<typename _Tp , typename _Alloc > list< _Tp, _Alloc >::iterator list::insert
       (const_iterator __position, const value_type & __x)
       Inserts given value into list before specified iterator.

       Parameters
           __position A const_iterator into the list.
           __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. Due to
       the nature of a list this operation can be done in constant time, and does not invalidate
       iterators and references.

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

   template<typename _Tp , typename _Alloc > list< _Tp, _Alloc >::iterator list::insert
       (const_iterator __position, size_type __n, const value_type & __x)
       Inserts a number of copies of given data into the list.

       Parameters
           __position A const_iterator into the list.
           __n Number of elements to be inserted.
           __x Data to be inserted.

       Returns
           An iterator pointing to the first element inserted (or __position).

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

       This operation is linear in the number of elements inserted and does not invalidate
       iterators and references.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> iterator std::list< _Tp,
       _Alloc >::insert (const_iterator __position, value_type && __x) [inline]
       Inserts given rvalue into list before specified iterator.

       Parameters
           __position A const_iterator into the list.
           __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. Due to
       the nature of a list this operation can be done in constant time, and does not invalidate
       iterators and references.

       References std::list< _Tp, _Alloc >::emplace(), and std::move().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> size_type std::list< _Tp,
       _Alloc >::max_size () const [inline],  [noexcept]
       Returns the size() of the largest possible list.

       References __gnu_cxx::__alloc_traits< _Alloc, typename >::max_size().

   template<typename _Tp , typename _Alloc > void list::merge (list< _Tp, _Alloc > && __x)
       Merge sorted lists.

       Parameters
           __x Sorted list to merge.

       Assumes that both __x and this list are sorted according to operator<(). Merges elements
       of __x into this list in sorted order, leaving __x empty when complete. Elements in this
       list precede elements in __x that are equal.

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

   template<typename _Tp , typename _Alloc > template<typename _StrictWeakOrdering > void
       list::merge (list< _Tp, _Alloc > && __x, _StrictWeakOrdering __comp)
       Merge sorted lists according to comparison function.

       Template Parameters
           _StrictWeakOrdering Comparison function defining sort order.

       Parameters
           __x Sorted list to merge.
           __comp Comparison functor.

       Assumes that both __x and this list are sorted according to StrictWeakOrdering. Merges
       elements of __x into this list in sorted order, leaving __x empty when complete. Elements
       in this list precede elements in __x that are equivalent according to
       StrictWeakOrdering().

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

   template<typename _Tp , typename _Alloc > list< _Tp, _Alloc > & list::operator= (const list<
       _Tp, _Alloc > & __x)
       List assignment operator.

       Parameters
           __x A list of identical element and allocator types.

       All the elements of __x are copied.

       Whether the allocator is copied depends on the allocator traits.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> list & std::list< _Tp, _Alloc
       >::operator= (initializer_list< value_type > __l) [inline]
       List initializer list assignment operator.

       Parameters
           __l An initializer_list of value_type.

       Replace the contents of the list with copies of the elements in the initializer_list __l.
       This is linear in l.size().

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> list & std::list< _Tp, _Alloc
       >::operator= (list< _Tp, _Alloc > && __x) [inline],  [noexcept]
       List move assignment operator.

       Parameters
           __x A list of identical element and allocator types.

       The contents of __x are moved into this list (without copying).

       Afterwards __x is a valid, but unspecified list

       Whether the allocator is moved depends on the allocator traits.

       References std::move().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::pop_back () [inline],  [noexcept]
       Removes last element. This is a typical stack operation. It shrinks the list by one. Due
       to the nature of a list this operation can be done in constant time, and only invalidates
       iterators/references to the element being removed.

       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::list< _Tp, _Alloc
       >::pop_front () [inline],  [noexcept]
       Removes first element. This is a typical stack operation. It shrinks the list by one. Due
       to the nature of a list this operation can be done in constant time, and only invalidates
       iterators/references to the element being removed.

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

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::push_back (const value_type & __x) [inline]
       Add data to the end of the list.

       Parameters
           __x Data to be added.

       This is a typical stack operation. The function creates an element at the end of the list
       and assigns the given data to it. Due to the nature of a list this operation can be done
       in constant time, and does not invalidate iterators and references.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::push_front (const value_type & __x) [inline]
       Add data to the front of the list.

       Parameters
           __x Data to be added.

       This is a typical stack operation. The function creates an element at the front of the
       list and assigns the given data to it. Due to the nature of a list this operation can be
       done in constant time, and does not invalidate iterators and references.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_reverse_iterator
       std::list< _Tp, _Alloc >::rbegin () const [inline],  [noexcept]
       Returns a read-only (constant) reverse iterator that points to the last element in the
       list. Iteration is done in reverse element order.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> reverse_iterator std::list<
       _Tp, _Alloc >::rbegin () [inline],  [noexcept]
       Returns a read/write reverse iterator that points to the last element in the list.
       Iteration is done in reverse element order.

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

   template<typename _Tp , typename _Alloc > list< _Tp, _Alloc >::__remove_return_type
       list::remove (const _Tp & __value)
       Remove all elements equal to value.

       Parameters
           __value The value to remove.

       Removes every element in the list equal to value. Remaining elements stay in list order.
       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.

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

   template<typename _Tp , typename _Alloc > template<typename _Predicate > list< _Tp, _Alloc
       >::__remove_return_type list::remove_if (_Predicate __pred)
       Remove all elements satisfying a predicate.

       Template Parameters
           _Predicate Unary predicate function or object.

       Removes every element in the list for which the predicate returns true. Remaining elements
       stay in list order. 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.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> const_reverse_iterator
       std::list< _Tp, _Alloc >::rend () const [inline],  [noexcept]
       Returns a read-only (constant) reverse iterator that points to one before the first
       element in the list. Iteration is done in reverse element order.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> reverse_iterator std::list<
       _Tp, _Alloc >::rend () [inline],  [noexcept]
       Returns a read/write reverse iterator that points to one before the first element in the
       list. Iteration is done in reverse element order.

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

   template<typename _Tp , typename _Alloc > void list::resize (size_type __new_size)
       Resizes the list to the specified number of elements.

       Parameters
           __new_size Number of elements the list should contain.

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

       References std::end().

   template<typename _Tp , typename _Alloc > void list::resize (size_type __new_size, const
       value_type & __x)
       Resizes the list to the specified number of elements.

       Parameters
           __new_size Number of elements the list should contain.
           __x Data with which new elements should be populated.

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

       References std::end().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::reverse () [inline],  [noexcept]
       Reverse the elements in list. Reverse the order of elements in the list in linear time.

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> size_type std::list< _Tp,
       _Alloc >::size () const [inline],  [noexcept]
       Returns the number of elements in the list.

   template<typename _Tp , typename _Alloc > void list::sort ()
       Sort the elements. Sorts the elements of this list in NlogN time. Equivalent elements
       remain in list order.

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

   template<typename _Tp , typename _Alloc > template<typename _StrictWeakOrdering > void
       list::sort (_StrictWeakOrdering __comp)
       Sort the elements according to comparison function. Sorts the elements of this list in
       NlogN time. Equivalent elements remain in list order.

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

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::splice (const_iterator __position, list< _Tp, _Alloc > && __x) [inline],  [noexcept]
       Insert contents of another list.

       Parameters
           __position Iterator referencing the element to insert before.
           __x Source list.

       The elements of __x are inserted in constant time in front of the element referenced by
       __position. __x becomes an empty list.

       Requires this != __x.

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

       Referenced by std::list< _Tp, _Alloc >::splice(), and std::list< _Tp, _Alloc >::splice().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::splice (const_iterator __position, list< _Tp, _Alloc > && __x, const_iterator __first,
       const_iterator __last) [inline],  [noexcept]
       Insert range from another list.

       Parameters
           __position Const_iterator referencing the element to insert before.
           __x Source list.
           __first Const_iterator referencing the start of range in x.
           __last Const_iterator referencing the end of range in x.

       Removes elements in the range [__first,__last) and inserts them before __position in
       constant time.

       Undefined if __position is in [__first,__last).

       References std::__addressof().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::splice (const_iterator __position, list< _Tp, _Alloc > && __x, const_iterator __i)
       [inline],  [noexcept]
       Insert element from another list.

       Parameters
           __position Const_iterator referencing the element to insert before.
           __x Source list.
           __i Const_iterator referencing the element to move.

       Removes the element in list __x referenced by __i and inserts it into the current list
       before __position.

       References std::__addressof().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::splice (const_iterator __position, list< _Tp, _Alloc > & __x, const_iterator __first,
       const_iterator __last) [inline],  [noexcept]
       Insert range from another list.

       Parameters
           __position Const_iterator referencing the element to insert before.
           __x Source list.
           __first Const_iterator referencing the start of range in x.
           __last Const_iterator referencing the end of range in x.

       Removes elements in the range [__first,__last) and inserts them before __position in
       constant time.

       Undefined if __position is in [__first,__last).

       References std::move(), and std::list< _Tp, _Alloc >::splice().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::splice (const_iterator __position, list< _Tp, _Alloc > & __x, const_iterator __i)
       [inline],  [noexcept]
       Insert element from another list.

       Parameters
           __position Const_iterator referencing the element to insert before.
           __x Source list.
           __i Const_iterator referencing the element to move.

       Removes the element in list __x referenced by __i and inserts it into the current list
       before __position.

       References std::move(), and std::list< _Tp, _Alloc >::splice().

   template<typename _Tp , typename _Alloc  = std::allocator<_Tp>> void std::list< _Tp, _Alloc
       >::swap (list< _Tp, _Alloc > & __x) [inline],  [noexcept]
       Swaps data with another list.

       Parameters
           __x A list of the same element and allocator types.

       This exchanges the elements between two lists in constant time. Note that the global
       std::swap() function is specialized such that std::swap(l1,l2) will feed to this function.

       Whether the allocators are swapped depends on the allocator traits.

   template<typename _Tp , typename _Alloc > list< _Tp, _Alloc >::__remove_return_type
       list::unique ()
       Remove consecutive duplicate elements. For each consecutive set of elements with the same
       value, remove all but the first one. Remaining elements stay in list order. 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.

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

   template<typename _Tp , typename _Alloc > template<typename _BinaryPredicate > list< _Tp,
       _Alloc >::__remove_return_type list::unique (_BinaryPredicate __binary_pred)
       Remove consecutive elements satisfying a predicate.

       Template Parameters
           _BinaryPredicate Binary predicate function or object.

       For each consecutive set of elements [first,last) that satisfy predicate(first,i) where i
       is an iterator in [first,last), remove all but the first one. Remaining elements stay in
       list order. 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.

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

Author

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