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/*      Copyright (C) 2004 Garrett A. Kajmowicz
 
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        This file is part of the uClibc++ Library.
 
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        This library is free software; you can redistribute it and/or
 
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        modify it under the terms of the GNU Lesser General Public
 
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        License as published by the Free Software Foundation; either
 
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        version 2.1 of the License, or (at your option) any later version.
 
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        This library is distributed in the hope that it will be useful,
 
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        but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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        Lesser General Public License for more details.
 
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        You should have received a copy of the GNU Lesser General Public
 
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        License along with this library; if not, write to the Free Software
 
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        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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#include <basic_definitions>
 
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#ifndef __STD_HEADER_ITERATOR_BASE
 
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#define __STD_HEADER_ITERATOR_BASE 1
 
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#pragma GCC visibility push(default)
 
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        template<class Iterator> struct iterator_traits;
 
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        template<class T> struct iterator_traits<T*>;
 
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        template<class Category, class T, class Distance = ptrdiff_t, class Pointer = T*, class Reference = T&> struct iterator;
 
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        struct _UCXXEXPORT input_iterator_tag {};
 
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        struct _UCXXEXPORT output_iterator_tag {};
 
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        struct _UCXXEXPORT forward_iterator_tag: public input_iterator_tag {};
 
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        struct _UCXXEXPORT bidirectional_iterator_tag: public forward_iterator_tag {};
 
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        struct _UCXXEXPORT random_access_iterator_tag: public bidirectional_iterator_tag {};
 
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        template <class InputIterator, class Distance> _UCXXEXPORT void advance(InputIterator& i, Distance n){
 
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        template <class InputIterator> _UCXXEXPORT typename iterator_traits<InputIterator>::difference_type 
 
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                distance(InputIterator first, InputIterator last)
 
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                typename iterator_traits<InputIterator>::difference_type d = 0;
 
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                while(first++ !=last){
 
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  // subclause _lib.predef.iterators_, predefined iterators:
 
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        template <class Iterator> class reverse_iterator;
 
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        template <class Iterator> bool operator==(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> bool operator<(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> bool operator!=(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> bool operator>(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> bool operator>=(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> bool operator<=(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> typename reverse_iterator<Iterator>::difference_type
 
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                operator-( const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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        template <class Iterator> reverse_iterator<Iterator> 
 
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                operator+( typename reverse_iterator<Iterator>::difference_type n, const reverse_iterator<Iterator>& x);
 
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        template <class Container> class back_insert_iterator;
 
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        template <class Container> back_insert_iterator<Container> back_inserter(Container& x);
 
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        template <class Container> class front_insert_iterator;
 
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        template <class Container> front_insert_iterator<Container> front_inserter(Container& x);
 
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        template <class Container> class insert_iterator;
 
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        template <class Container, class Iterator>
 
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                insert_iterator<Container> inserter(Container& x, Iterator i);
 
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        //Actual Template definitions
 
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        template<class Iterator> struct _UCXXEXPORT iterator_traits {
 
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                typedef typename Iterator::difference_type difference_type;
 
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                typedef typename Iterator::value_type value_type;
 
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                typedef typename Iterator::pointer pointer;
 
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                typedef typename Iterator::reference reference;
 
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                typedef typename Iterator::iterator_category iterator_category;
 
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        //Pointer specialization - required by standard
 
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        template<class T> struct _UCXXEXPORT iterator_traits<T*> {
 
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                typedef ptrdiff_t difference_type;
 
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                typedef random_access_iterator_tag iterator_category;
 
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        //Specialization recomended by standard
 
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/*      template<class T> struct _UCXXEXPORT iterator_traits<T __far*> {
 
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                typedef long difference_type;
 
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                typedef T __far* pointer;
 
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                typedef T __far& reference;
 
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                typedef random_access_iterator_tag iterator_category;
 
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/*      template <class BidirectionalIterator> _UCXXEXPORT void
 
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                reverse(BidirectionalIterator first, BidirectionalIterator last)
 
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                typename iterator_traits<BidirectionalIterator>::difference_type n = distance(first, last);
 
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                        typename iterator_traits<BidirectionalIterator>::value_type tmp = *first;
 
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        template <class Category, class T, class Distance, class Pointer, class Reference> 
 
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                struct _UCXXEXPORT iterator
 
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                typedef T         value_type;
 
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                typedef Distance  difference_type;
 
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                typedef Pointer   pointer;
 
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                typedef Reference reference;
 
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                typedef Category  iterator_category;
 
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        template <class Iterator> class _UCXXEXPORT reverse_iterator
 
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                : public iterator<typename iterator_traits<Iterator>::iterator_category,
 
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                typename iterator_traits<Iterator>::value_type, typename iterator_traits<Iterator>::difference_type,
 
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                typename iterator_traits<Iterator>::pointer, typename iterator_traits<Iterator>::reference>
 
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                friend bool operator== <Iterator>(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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                friend bool operator< <Iterator>(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y);
 
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                typedef Iterator iterator_type;
 
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                reverse_iterator() : current(){};
 
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                explicit reverse_iterator(Iterator x) : current(x) { }
 
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                template<class U> reverse_iterator(const reverse_iterator<U> &x) : current(x.base()){}
 
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                Iterator base() const { return current; }        // explicit
 
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                typename iterator_traits<Iterator>::reference operator*() const { Iterator tmp = current; return *--tmp; }
 
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                typename iterator_traits<Iterator>::pointer   operator->() const { return &(operator*()); }
 
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                typename iterator_traits<Iterator>::reference operator[](typename iterator_traits<Iterator>::difference_type n) const{
 
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                        return current[-n-1];
 
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                reverse_iterator& operator++(){ --current; return *this;        }
 
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                reverse_iterator  operator++(int) {reverse_iterator tmp = *this; --current; return tmp; }
 
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                reverse_iterator& operator--() { ++ current; return *this; }
 
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                reverse_iterator  operator--(int) {reverse_iterator tmp = *this; ++current; return tmp; }
 
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                reverse_iterator  operator+ (typename iterator_traits<Iterator>::difference_type n) const{
 
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                        reverse_iterator retval( *this );
 
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                reverse_iterator& operator+=(typename iterator_traits<Iterator>::difference_type n){
 
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                reverse_iterator operator- (typename iterator_traits<Iterator>::difference_type n) const{
 
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                        reverse_iterator retval( *this );
 
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                reverse_iterator& operator-=(typename iterator_traits<Iterator>::difference_type n){
 
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        template <class Iterator> _UCXXEXPORT bool
 
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                operator==(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return x.base() == y.base();
 
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        template <class Iterator> _UCXXEXPORT bool
 
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                operator<(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return x.base() < y.base();
 
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        template <class Iterator> _UCXXEXPORT bool
 
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                operator!=(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return x.base() != y.base();
 
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        template <class Iterator> _UCXXEXPORT bool
 
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                operator>(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return x.base() > y.base();
 
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        template <class Iterator> _UCXXEXPORT bool
 
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                operator>=(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return x.base() >= y.base();
 
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        template <class Iterator> _UCXXEXPORT bool
 
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                operator<=(const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return x.base() <= y.base();
 
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        template <class Iterator> _UCXXEXPORT typename reverse_iterator<Iterator>::difference_type
 
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                operator-( const reverse_iterator<Iterator>& x, const reverse_iterator<Iterator>& y)
 
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                return y.base() - x.base();
 
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        template <class Iterator> _UCXXEXPORT reverse_iterator<Iterator>
 
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                operator+(typename reverse_iterator<Iterator>::difference_type n, const reverse_iterator<Iterator>& x)
 
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                return reverse_iterator<Iterator> (x.base() - n);
 
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        template <class Container> class _UCXXEXPORT back_insert_iterator : 
 
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                public iterator<output_iterator_tag,void,void,void,void>
 
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                Container& container;
 
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                typedef Container container_type;
 
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                explicit back_insert_iterator(Container& x):container(x) {};
 
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                back_insert_iterator<Container>& operator=(const typename Container::value_type& value){
 
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                        container.push_back(value);
 
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                back_insert_iterator<Container>& operator*(){
 
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                back_insert_iterator<Container>& operator++(){
 
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                back_insert_iterator<Container>  operator++(int){
 
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        template <class Container> _UCXXEXPORT back_insert_iterator<Container>
 
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                back_inserter(Container& x)
 
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                return back_insert_iterator<Container>(x);
 
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        template <class Container> class _UCXXEXPORT front_insert_iterator
 
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                : public iterator<output_iterator_tag,void,void,void,void>
 
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                Container& container;
 
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                typedef Container container_type;
 
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                explicit front_insert_iterator(Container& x): container(x) {}
 
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                front_insert_iterator<Container>& operator=(const typename Container::value_type& value){
 
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                        container.push_front(value);
 
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                front_insert_iterator<Container>& operator*() { return *this; }
 
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                front_insert_iterator<Container>& operator++() { return *this; }
 
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                front_insert_iterator<Container> operator++(int) { return *this; }
 
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        template <class Container> _UCXXEXPORT front_insert_iterator<Container>
 
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                front_inserter(Container& x)
 
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                return front_insert_iterator<Container>(x);
 
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        template <class Container> class _UCXXEXPORT insert_iterator
 
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                : public iterator<output_iterator_tag,void,void,void,void>
 
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                Container& container;
 
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                typename Container::iterator iter;
 
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                typedef Container container_type;
 
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                insert_iterator(Container& x, typename Container::iterator i) : container(x), iter(i) {}
 
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                insert_iterator<Container>& operator=(const typename Container::value_type& value){
 
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                        iter = container.insert(iter, value);
 
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                insert_iterator<Container>& operator*() { return *this; } 
 
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                insert_iterator<Container>& operator++() { return *this; }
 
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                insert_iterator<Container> operator++(int) { return *this; }
 
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        template <class Container, class Iterator> _UCXXEXPORT insert_iterator<Container>
 
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                inserter(Container& x, Iterator i)
 
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                return insert_iterator<Container>(x,typename Container::iterator(i));
 
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#pragma GCC visibility pop