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std::forward_list< _Tp, _Alloc > - A standard container with linear time access to elements, and fixed

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       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++             std::forward_list<_Tp,_Alloc>(3cxx)

Constructor & Destructor Documentation

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(const_Alloc&__al)[inline],[explicit],[noexcept]
       Creates a forward_list with no elements.

       Parameters__al An allocator object.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(constforward_list<_Tp,_Alloc>&__list,const__type_identity_t<_Alloc>&__al)[inline]
       Copy constructor with allocator argument.

       Parameters__list Input list to copy.
           __al An allocator object.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(forward_list<_Tp,_Alloc>&&__list,const__type_identity_t<_Alloc>&__al)[inline],[noexcept]
       Move constructor with allocator argument.

       Parameters__list Input list to move.
           __al An allocator object.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(size_type__n,const_Alloc&__al=_Alloc())[inline],[explicit]
       Creates a forward_list with default constructed elements.

       Parameters__n The number of elements to initially create.
           __al An allocator object.

       This constructor creates the forward_list with __n default constructed elements.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(size_type__n,const_Tp&__value,const_Alloc&__al=_Alloc())[inline]
       Creates a forward_list with copies of an exemplar element.

       Parameters__n The number of elements to initially create.
           __value An element to copy.
           __al An allocator object.

       This constructor fills the forward_list with __n copies of __value.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>template<typename_InputIterator,typename=std::_RequireInputIter<_InputIterator>>std::forward_list<_Tp,_Alloc>::forward_list(_InputIterator__first,_InputIterator__last,const_Alloc&__al=_Alloc())[inline]
       Builds a forward_list from a range.

       Parameters__first An input iterator.
           __last An input iterator.
           __al An allocator object.

       Create a forward_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=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(constforward_list<_Tp,_Alloc>&__list)[inline]
       The forward_list copy constructor.

       Parameters__list A forward_list of identical element and allocator types.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(forward_list<_Tp,_Alloc>&&)[default]
       The forward_list move constructor.

       Parameters__list A forward_list of identical element and allocator types.

       The newly-created forward_list contains the exact contents of the moved instance. The contents of the
       moved instance are a valid, but unspecified forward_list.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::forward_list(std::initializer_list<_Tp>__il,const_Alloc&__al=_Alloc())[inline]
       Builds a forward_list from an initializer_list.

       Parameters__il An initializer_list of value_type.
           __al An allocator object.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>std::forward_list<_Tp,_Alloc>::~forward_list()[inline],[noexcept]
       The forward_list dtor.

Detailed Description

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

       Since
           C++11

       TemplateParameters_Tp Type of element.
           _Alloc Allocator type, defaults to allocator<_Tp>.

       Meets the requirements of a container, a sequence, including the optional sequence requirements with the
       exception of at and operator[].

       This is a singlylinked list. Traversal up 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::forward_list provides specialized algorithms unique to
       linked lists, such as splicing, sorting, and in-place reversal.

Member Function Documentation

template<typename_Tp,typename_Alloc=allocator<_Tp>>template<typename_InputIterator,typename=std::_RequireInputIter<_InputIterator>>voidstd::forward_list<_Tp,_Alloc>::assign(_InputIterator__first,_InputIterator__last)[inline]
       Assigns a range to a forward_list.

       Parameters__first An input iterator.
           __last An input iterator.

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

       Note that the assignment completely changes the forward_list and that the number of elements of the
       resulting forward_list is the same as the number of elements assigned.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::assign(size_type__n,const_Tp&__val)[inline]
       Assigns a given value to a forward_list.

       Parameters__n Number of elements to be assigned.
           __val Value to be assigned.

       This function fills a forward_list with __n copies of the given value. Note that the assignment
       completely changes the forward_list, and that the resulting forward_list has __n elements.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::assign(std::initializer_list<_Tp>__il)[inline]
       Assigns an initializer_list to a forward_list.

       Parameters__il An initializer_list of value_type.

       Replace the contents of the forward_list with copies of the elements in the initializer_list __il. This
       is linear in il.size().

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>const_iteratorstd::forward_list<_Tp,_Alloc>::before_begin()const[inline],[noexcept]
       Returns a read-only (constant) iterator that points before the first element in the forward_list.
       Iteration is done in ordinary element order.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>iteratorstd::forward_list<_Tp,_Alloc>::before_begin()[inline],[noexcept]
       Returns a read/write iterator that points before the first element in the forward_list. Iteration is done
       in ordinary element order.

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

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>const_iteratorstd::forward_list<_Tp,_Alloc>::cbefore_begin()const[inline],[noexcept]
       Returns a read-only (constant) iterator that points before the first element in the forward_list.
       Iteration is done in ordinary element order.

       Referenced by std::forward_list<_Tp,_Alloc>::emplace_front(), and std::forward_list<_Tp,_Alloc>::push_front().

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

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_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=allocator<_Tp>>template<typename..._Args>iteratorstd::forward_list<_Tp,_Alloc>::emplace_after(const_iterator__pos,_Args&&...__args)[inline]
       Constructs object in forward_list after the specified iterator.

       Parameters__pos A const_iterator into the forward_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)...) after the
       specified location. Due to the nature of a forward_list this operation can be done in constant time, and
       does not invalidate iterators and references.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>template<typename..._Args>referencestd::forward_list<_Tp,_Alloc>::emplace_front(_Args&&...__args)[inline]
       Constructs object in forward_list at the front of the list.

       Parameters__args Arguments.

       This function will insert an object of type Tp constructed with Tp(std::forward<Args>(args)...) at the
       front of the list Due to the nature of a forward_list this operation can be done in constant time, and
       does not invalidate iterators and references.

       References std::forward_list<_Tp,_Alloc>::cbefore_begin(), and std::forward_list<_Tp,_Alloc>::front().

   template<typename_Tp,typename_Alloc=allocator<_Tp>>boolstd::forward_list<_Tp,_Alloc>::empty()const[inline],[noexcept]
       Returns true if the forward_list is empty. (Thus begin() would equal end().)

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

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>iteratorstd::forward_list<_Tp,_Alloc>::erase_after(const_iterator__pos)[inline]
       Removes the element pointed to by the iterator following pos.

       Parameters__pos Iterator pointing before element to be erased.

       Returns
           An iterator pointing to the element following the one that was erased, or end() if no such element
           exists.

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

       Due to the nature of a forward_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.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>iteratorstd::forward_list<_Tp,_Alloc>::erase_after(const_iterator__pos,const_iterator__last)[inline]
       Remove a range of elements.

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

       Returns
           @ __last.

       This function will erase the elements in the range (__pos,__last) and shorten the forward_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.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>referencestd::forward_list<_Tp,_Alloc>::front()[inline]
       Returns a read/write reference to the data at the first element of the forward_list.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>const_referencestd::forward_list<_Tp,_Alloc>::front()const[inline]
       Returns a read-only (constant) reference to the data at the first element of the forward_list.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>allocator_typestd::forward_list<_Tp,_Alloc>::get_allocator()const[inline],[noexcept]
       Get a copy of the memory allocation object.

   template<typename_Tp,typename_Alloc>template<typename_InputIterator,typename>forward_list<_Tp,_Alloc>::iteratorforward_list::insert_after(const_iterator__pos,_InputIterator__first,_InputIterator__last)
       Inserts a range into the forward_list.

       Parameters__pos An iterator into the forward_list.
           __first An input iterator.
           __last An input iterator.

       Returns
           An iterator pointing to the last inserted element or __pos if __first == __last.

       This function will insert copies of the data in the range [__first,__last) into the forward_list after
       the location specified by __pos.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>iteratorstd::forward_list<_Tp,_Alloc>::insert_after(const_iterator__pos,const_Tp&__val)[inline]
       Inserts given value into forward_list after specified iterator.

       Parameters__pos An iterator into the forward_list.
           __val Data to be inserted.

       Returns
           An iterator that points to the inserted data.

       This function will insert a copy of the given value after the specified location. Due to the nature of a
       forward_list this operation can be done in constant time, and does not invalidate iterators and
       references.

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

   template<typename_Tp,typename_Alloc>forward_list<_Tp,_Alloc>::iteratorforward_list::insert_after(const_iterator__pos,size_type__n,const_Tp&__val)
       Inserts a number of copies of given data into the forward_list.

       Parameters__pos An iterator into the forward_list.
           __n Number of elements to be inserted.
           __val Data to be inserted.

       Returns
           An iterator pointing to the last inserted copy of val or pos if n == 0.

       This function will insert a specified number of copies of the given data after the location specified by
       pos.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>iteratorstd::forward_list<_Tp,_Alloc>::insert_after(const_iterator__pos,std::initializer_list<_Tp>__il)[inline]
       Inserts the contents of an initializer_list into forward_list after the specified iterator.

       Parameters__pos An iterator into the forward_list.
           __il An initializer_list of value_type.

       Returns
           An iterator pointing to the last inserted element or __pos if __il is empty.

       This function will insert copies of the data in the initializer_list __il into the forward_list before
       the location specified by __pos.

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

       References std::forward_list<_Tp,_Alloc>::insert_after().

   template<typename_Tp,typename_Alloc=allocator<_Tp>>size_typestd::forward_list<_Tp,_Alloc>::max_size()const[inline],[noexcept]
       Returns the largest possible number of elements of forward_list.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::merge(forward_list<_Tp,_Alloc>&&__list)[inline]
       Merge sorted lists.

       Parameters__list Sorted list to merge.

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

       References std::forward_list<_Tp,_Alloc>::merge(), and std::move().

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

   template<typename_Tp,typename_Alloc>template<typename_Comp>voidforward_list::merge(forward_list<_Tp,_Alloc>&&__list,_Comp__comp)
       Merge sorted lists according to comparison function.

       Parameters__list Sorted list to merge.
           __comp Comparison function defining sort order.

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

       References std::__addressof(), and std::move().

   template<typename_Tp,typename_Alloc>forward_list<_Tp,_Alloc>&forward_list::operator=(constforward_list<_Tp,_Alloc>&__list)
       The forward_list assignment operator.

       Parameters__list A forward_list of identical element and allocator types.

       All the elements of __list are copied.

       Whether the allocator is copied depends on the allocator traits.

       References std::__addressof().

   template<typename_Tp,typename_Alloc=allocator<_Tp>>forward_list&std::forward_list<_Tp,_Alloc>::operator=(forward_list<_Tp,_Alloc>&&__list)[inline],[noexcept]
       The forward_list move assignment operator.

       Parameters__list A forward_list of identical element and allocator types.

       The contents of __list are moved into this forward_list (without copying, if the allocators permit it).

       Afterwards __list is a valid, but unspecified forward_list

       Whether the allocator is moved depends on the allocator traits.

       References std::move().

   template<typename_Tp,typename_Alloc=allocator<_Tp>>forward_list&std::forward_list<_Tp,_Alloc>::operator=(std::initializer_list<_Tp>__il)[inline]
       The forward_list initializer list assignment operator.

       Parameters__il An initializer_list of value_type.

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

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::pop_front()[inline]
       Removes first element. This is a typical stack operation. It shrinks the forward_list by one. Due to the
       nature of a forward_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.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::push_front(const_Tp&__val)[inline]
       Add data to the front of the forward_list.

       Parameters__val Data to be added.

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

       References std::forward_list<_Tp,_Alloc>::cbefore_begin().

   template<typename_Tp,typename_Alloc>autoforward_list::remove(const_Tp&__val)
       Remove all elements equal to value.

       Parameters__val The value to remove.

       Removes every element in the list equal to __val. 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.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>template<typename_Pred>__remove_return_typestd::forward_list<_Tp,_Alloc>::remove_if(_Pred__pred)
       Remove all elements satisfying a predicate.

       Parameters__pred 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.

   template<typename_Tp,typename_Alloc>voidforward_list::resize(size_type__sz)
       Resizes the forward_list to the specified number of elements.

       Parameters__sz Number of elements the forward_list should contain.

       This function will resize the forward_list to the specified number of elements. If the number is smaller
       than the forward_list's current number of elements the forward_list is truncated, otherwise the
       forward_list is extended and the new elements are default constructed.

   template<typename_Tp,typename_Alloc>voidforward_list::resize(size_type__sz,constvalue_type&__val)
       Resizes the forward_list to the specified number of elements.

       Parameters__sz Number of elements the forward_list should contain.
           __val Data with which new elements should be populated.

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_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=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::sort()[inline]
       Sort the elements of the list. Sorts the elements of this list in NlogN time. Equivalent elements remain
       in list order.

       References std::forward_list<_Tp,_Alloc>::sort().

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

   template<typename_Tp,class_Alloc>template<typename_Comp>voidforward_list::sort(_Comp__comp)
       Sort the forward_list using a comparison function. Sorts the elements of this list in NlogN time.
       Equivalent elements remain in list order.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::splice_after(const_iterator__pos,forward_list<_Tp,_Alloc>&&,const_iterator__before,const_iterator__last)[inline],[noexcept]
       Insert range from another forward_list.

       Parameters__pos Iterator referencing the element to insert after.
           __list Source list.
           __before Iterator referencing before the start of range in list.
           __last Iterator referencing the end of range in list.

       Removes elements in the range (__before,__last) and inserts them after __pos in constant time.

       Undefined if __pos is in (__before,__last).

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::splice_after(const_iterator__pos,forward_list<_Tp,_Alloc>&&__list)[inline],[noexcept]
       Insert contents of another forward_list.

       Parameters__pos Iterator referencing the element to insert after.
           __list Source list.

       The elements of list are inserted in constant time after the element referenced by pos. list becomes an
       empty list.

       Requires this != x.

   template<typename_Tp,typename_Alloc>voidforward_list::splice_after(const_iterator__pos,forward_list<_Tp,_Alloc>&&__list,const_iterator__i)[noexcept]
       Insert element from another forward_list.

       Parameters__pos Iterator referencing the element to insert after.
           __list Source list.
           __i Iterator referencing the element before the element to move.

       Removes the element in list list referenced by i and inserts it into the current list after pos.

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::splice_after(const_iterator__pos,forward_list<_Tp,_Alloc>&,const_iterator__before,const_iterator__last)[inline],[noexcept]
       Insert range from another forward_list.

       Parameters__pos Iterator referencing the element to insert after.
           __list Source list.
           __before Iterator referencing before the start of range in list.
           __last Iterator referencing the end of range in list.

       Removes elements in the range (__before,__last) and inserts them after __pos in constant time.

       Undefined if __pos is in (__before,__last).

   template<typename_Tp,typename_Alloc=allocator<_Tp>>voidstd::forward_list<_Tp,_Alloc>::swap(forward_list<_Tp,_Alloc>&__list)[inline],[noexcept]
       Swaps data with another forward_list.

       Parameters__list A forward_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.

       References std::swap().

   template<typename_Tp,typename_Alloc=allocator<_Tp>>__remove_return_typestd::forward_list<_Tp,_Alloc>::unique()[inline]
       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::forward_list<_Tp,_Alloc>::unique().

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

   template<typename_Tp,typename_Alloc=allocator<_Tp>>template<typename_BinPred>__remove_return_typestd::forward_list<_Tp,_Alloc>::unique(_BinPred__binary_pred)
       Remove consecutive elements satisfying a predicate.

       Parameters__binary_pred 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.

Name

       std::forward_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 <forward_list>

       Inherits std::_Fwd_list_base<_Tp,_Alloc>.

   PublicTypestypedef _Alloc allocator_typetypedef_Base::const_iteratorconst_iteratortypedef _Alloc_traits::const_pointer const_pointertypedef const value_type & const_referencetypedef std::ptrdiff_t difference_typetypedef_Base::iteratoriteratortypedef _Alloc_traits::pointer pointertypedef value_type & referencetypedef std::size_t size_typetypedef _Tp value_typePublicMemberFunctionsforward_list ()=default
           Creates a forward_list with no elements.
       template<typename_InputIterator , typename  = std::_RequireInputIter<_InputIterator>> forward_list
           (_InputIterator __first, _InputIterator __last, const _Alloc &__al=_Alloc())
           Builds a forward_list from a range.
       forward_list (const _Alloc &__al) noexcept
           Creates a forward_list with no elements.
       forward_list (const forward_list &__list)
           The forward_list copy constructor.
       forward_list (const forward_list &__list, const __type_identity_t< _Alloc > &__al)
           Copy constructor with allocator argument.
       forward_list (forward_list &&)=default
           The forward_list move constructor.
       forward_list (forward_list &&__list, const __type_identity_t< _Alloc > &__al)
           noexcept(_Node_alloc_traits::_S_always_equal())
           Move constructor with allocator argument.
       forward_list (size_type __n, const _Alloc &__al=_Alloc())
           Creates a forward_list with default constructed elements.
       forward_list (size_type __n, const _Tp &__value, const _Alloc &__al=_Alloc())
           Creates a forward_list with copies of an exemplar element.
       forward_list (std::initializer_list< _Tp > __il, const _Alloc &__al=_Alloc())
           Builds a forward_list from an initializer_list.
       ~forward_list () noexcept
           The forward_list dtor.
       template<typename_InputIterator , typename  = std::_RequireInputIter<_InputIterator>> voidassign
           (_InputIterator __first, _InputIterator __last)
           Assigns a range to a forward_list.
       voidassign (size_type __n, const _Tp &__val)
           Assigns a given value to a forward_list.
       voidassign (std::initializer_list< _Tp > __il)
           Assigns an initializer_list to a forward_list.
       const_iteratorbefore_begin () const noexcept
       iteratorbefore_begin () noexcept
       const_iteratorbegin () const noexcept
       iteratorbegin () noexcept
       const_iteratorcbefore_begin () const noexcept
       const_iteratorcbegin () const noexcept
       const_iteratorcend () const noexcept
       voidclear () noexcept
           Erases all the elements.
       template<typename... _Args> iteratoremplace_after (const_iterator__pos, _Args &&... __args)
           Constructs object in forward_list after the specified iterator.
       template<typename... _Args> reference emplace_front (_Args &&... __args)
           Constructs object in forward_list at the front of the list.
       bool empty () const noexcept
       const_iteratorend () const noexcept
       iteratorend () noexcept
       iteratorerase_after (const_iterator__pos)
           Removes the element pointed to by the iterator following pos.
       iteratorerase_after (const_iterator__pos, const_iterator __last)
           Remove a range of elements.
       reference front ()
       const_reference front () const
       allocator_type get_allocator () const noexcept
           Get a copy of the memory allocation object.
       template<typename_InputIterator , typename  = std::_RequireInputIter<_InputIterator>> iteratorinsert_after (const_iterator__pos, _InputIterator __first, _InputIterator __last)
           Inserts a range into the forward_list.
       iteratorinsert_after (const_iterator__pos, _Tp &&__val)
       iteratorinsert_after (const_iterator__pos, const _Tp &__val)
           Inserts given value into forward_list after specified iterator.
       iteratorinsert_after (const_iterator__pos, size_type __n, const _Tp &__val)
           Inserts a number of copies of given data into the forward_list.
       iteratorinsert_after (const_iterator__pos, std::initializer_list< _Tp > __il)
           Inserts the contents of an initializer_list into forward_list after the specified iterator.
       size_type max_size () const noexcept
       voidmerge (forward_list &&__list)
           Merge sorted lists.
       template<typename_Comp > voidmerge (forward_list &&__list, _Comp __comp)
           Merge sorted lists according to comparison function.
       voidmerge (forward_list &__list)
       template<typename_Comp > voidmerge (forward_list &__list, _Comp __comp)
       forward_list & operator= (const forward_list &__list)
           The forward_list assignment operator.
       forward_list & operator= (forward_list &&__list) noexcept(_Node_alloc_traits::_S_nothrow_move())
           The forward_list move assignment operator.
       forward_list & operator= (std::initializer_list< _Tp > __il)
           The forward_list initializer list assignment operator.
       voidpop_front ()
           Removes first element.
       voidpush_front (_Tp &&__val)
       voidpush_front (const _Tp &__val)
           Add data to the front of the forward_list.
       __remove_return_type remove (const _Tp &__val)
           Remove all elements equal to value.
       template<typename_Pred > __remove_return_type remove_if (_Pred__pred)
           Remove all elements satisfying a predicate.
       template<typename_Pred > autoremove_if (_Pred__pred) -> __remove_return_type
       voidresize (size_type __sz)
           Resizes the forward_list to the specified number of elements.
       voidresize (size_type __sz, const value_type &__val)
           Resizes the forward_list to the specified number of elements.
       voidreverse () noexcept
           Reverse the elements in list.
       voidsort ()
           Sort the elements of the list.
       template<typename_Comp > voidsort (_Comp __comp)
           Sort the forward_list using a comparison function.
       voidsplice_after (const_iterator__pos, forward_list &&__list) noexcept
           Insert contents of another forward_list.
       voidsplice_after (const_iterator__pos, forward_list &&__list, const_iterator __i) noexcept
           Insert element from another forward_list.
       voidsplice_after (const_iterator__pos, forward_list &__list) noexcept
       voidsplice_after (const_iterator__pos, forward_list &__list, const_iterator __i) noexcept
       voidswap (forward_list &__list) noexcept
           Swaps data with another forward_list.
       __remove_return_type unique ()
           Remove consecutive duplicate elements.
       template<typename_BinPred > __remove_return_type unique (_BinPred__binary_pred)
           Remove consecutive elements satisfying a predicate.
       template<typename_BinPred > autounique (_BinPred__binary_pred) -> __remove_return_type

           voidsplice_after (const_iterator__pos, forward_list &&, const_iterator__before, const_iterator
               __last) noexcept
               Insert range from another forward_list.
           voidsplice_after (const_iterator__pos, forward_list &, const_iterator__before, const_iterator
               __last) noexcept
               Insert range from another forward_list.

See Also