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 /////////////////////////////////////////////////////////////////////////////
 //
 // (C) Copyright Olaf Krzikalla 2004-2006.
 // (C) Copyright Ion Gaztanaga  2006-2014
 //
 // Distributed under the Boost Software License, Version 1.0.
 //    (See accompanying file LICENSE_1_0.txt or copy at
 //          http://www.boost.org/LICENSE_1_0.txt)
 //
 // See http://www.boost.org/libs/intrusive for documentation.
 //
 /////////////////////////////////////////////////////////////////////////////
 #ifndef BOOST_INTRUSIVE_UNORDERED_SET_HPP
 #define BOOST_INTRUSIVE_UNORDERED_SET_HPP
 
 #include <boost/intrusive/detail/config_begin.hpp>
 #include <boost/intrusive/intrusive_fwd.hpp>
 #include <boost/intrusive/hashtable.hpp>
 #include <boost/move/utility_core.hpp>
 #include <boost/static_assert.hpp>
 
 #if defined(BOOST_HAS_PRAGMA_ONCE)
 #  pragma once
 #endif
 
 namespace boost {
 namespace intrusive {
 
 //! The class template unordered_set is an intrusive container, that mimics most of
 //! the interface of std::tr1::unordered_set as described in the C++ TR1.
 //!
 //! unordered_set is a semi-intrusive container: each object to be stored in the
 //! container must contain a proper hook, but the container also needs
 //! additional auxiliary memory to work: unordered_set needs a pointer to an array
 //! of type `bucket_type` to be passed in the constructor. This bucket array must
 //! have at least the same lifetime as the container. This makes the use of
 //! unordered_set more complicated than purely intrusive containers.
 //! `bucket_type` is default-constructible, copyable and assignable
 //!
 //! The template parameter \c T is the type to be managed by the container.
 //! The user can specify additional options and if no options are provided
 //! default options are used.
 //!
 //! The container supports the following options:
 //! \c base_hook<>/member_hook<>/value_traits<>,
 //! \c constant_time_size<>, \c size_type<>, \c hash<> and \c equal<>
 //! \c bucket_traits<>, \c power_2_buckets<> and \c cache_begin<>.
 //!
 //! unordered_set only provides forward iterators but it provides 4 iterator types:
 //! iterator and const_iterator to navigate through the whole container and
 //! local_iterator and const_local_iterator to navigate through the values
 //! stored in a single bucket. Local iterators are faster and smaller.
 //!
 //! It's not recommended to use non constant-time size unordered_sets because several
 //! key functions, like "empty()", become non-constant time functions. Non
 //! constant-time size unordered_sets are mainly provided to support auto-unlink hooks.
 //!
 //! unordered_set, unlike std::unordered_set, does not make automatic rehashings nor
 //! offers functions related to a load factor. Rehashing can be explicitly requested
 //! and the user must provide a new bucket array that will be used from that moment.
 //!
 //! Since no automatic rehashing is done, iterators are never invalidated when
 //! inserting or erasing elements. Iterators are only invalidated when rehasing.
 #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
 template<class T, class ...Options>
 #else
 template<class ValueTraits, class VoidOrKeyOfValue, class VoidOrKeyHash, class VoidOrKeyEqual, class SizeType, class BucketTraits, std::size_t BoolFlags>
 #endif
 class unordered_set_impl
    #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
    : public hashtable_impl<ValueTraits, VoidOrKeyOfValue, VoidOrKeyHash, VoidOrKeyEqual, BucketTraits, SizeType, BoolFlags|hash_bool_flags::unique_keys_pos>
    #endif
 {
    /// @cond
    private:
    typedef hashtable_impl<ValueTraits, VoidOrKeyOfValue, VoidOrKeyHash, VoidOrKeyEqual, BucketTraits, SizeType, BoolFlags|hash_bool_flags::unique_keys_pos> table_type;
 
    template<class Iterator, class MaybeConstThis, class KeyType, class KeyHasher, class KeyEqual>
    static std::pair<Iterator,Iterator> priv_equal_range(MaybeConstThis &c, const KeyType& key, KeyHasher hash_func, KeyEqual equal_func)
    {
       Iterator const it = c.find(key, hash_func, equal_func);
       std::pair<Iterator,Iterator> ret(it, it);      
       if(it != c.end())
          ++ret.second;
       return ret;
    }
 
    //! This class is
    //! movable
    BOOST_MOVABLE_BUT_NOT_COPYABLE(unordered_set_impl)
 
    typedef table_type implementation_defined;
    /// @endcond
 
    public:
    typedef typename implementation_defined::value_type                  value_type;
    typedef typename implementation_defined::key_type                    key_type;
    typedef typename implementation_defined::key_of_value                key_of_value;
    typedef typename implementation_defined::value_traits                value_traits;
    typedef typename implementation_defined::bucket_traits               bucket_traits;
    typedef typename implementation_defined::pointer                     pointer;
    typedef typename implementation_defined::const_pointer               const_pointer;
    typedef typename implementation_defined::reference                   reference;
    typedef typename implementation_defined::const_reference             const_reference;
    typedef typename implementation_defined::difference_type             difference_type;
    typedef typename implementation_defined::size_type                   size_type;
    typedef typename implementation_defined::key_equal                   key_equal;
    typedef typename implementation_defined::hasher                      hasher;
    typedef typename implementation_defined::bucket_type                 bucket_type;
    typedef typename implementation_defined::bucket_ptr                  bucket_ptr;
    typedef typename implementation_defined::iterator                    iterator;
    typedef typename implementation_defined::const_iterator              const_iterator;
    typedef typename implementation_defined::insert_commit_data          insert_commit_data;
    typedef typename implementation_defined::local_iterator              local_iterator;
    typedef typename implementation_defined::const_local_iterator        const_local_iterator;
    typedef typename implementation_defined::node_traits                 node_traits;
    typedef typename implementation_defined::node                        node;
    typedef typename implementation_defined::node_ptr                    node_ptr;
    typedef typename implementation_defined::const_node_ptr              const_node_ptr;
 
    public:
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable(const bucket_traits &,const hasher &,const key_equal &,const value_traits &)
    BOOST_INTRUSIVE_FORCEINLINE explicit unordered_set_impl( const bucket_traits &b_traits
                               , const hasher & hash_func = hasher()
                               , const key_equal &equal_func = key_equal()
                               , const value_traits &v_traits = value_traits())
       :  table_type(b_traits, hash_func, equal_func, v_traits)
    {}
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable(bool,Iterator,Iterator,const bucket_traits &,const hasher &,const key_equal &,const value_traits &)
    template<class Iterator>
    BOOST_INTRUSIVE_FORCEINLINE unordered_set_impl( Iterator b
                      , Iterator e
                      , const bucket_traits &b_traits
                      , const hasher & hash_func = hasher()
                      , const key_equal &equal_func = key_equal()
                      , const value_traits &v_traits = value_traits())
       :  table_type(true, b, e, b_traits, hash_func, equal_func, v_traits)
    {}
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable(hashtable&&)
    BOOST_INTRUSIVE_FORCEINLINE unordered_set_impl(BOOST_RV_REF(unordered_set_impl) x)
       :  table_type(BOOST_MOVE_BASE(table_type, x))
    {}
 
    //! @copydoc ::boost::intrusive::hashtable::operator=(hashtable&&)
    BOOST_INTRUSIVE_FORCEINLINE unordered_set_impl& operator=(BOOST_RV_REF(unordered_set_impl) x)
    {  return static_cast<unordered_set_impl&>(table_type::operator=(BOOST_MOVE_BASE(table_type, x))); }
 
    #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
    //! @copydoc ::boost::intrusive::hashtable::~hashtable()
    ~unordered_set_impl();
 
    //! @copydoc ::boost::intrusive::hashtable::begin()
    iterator begin() BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::begin()const
    const_iterator begin() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cbegin()const
    const_iterator cbegin() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end()
    iterator end() BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end()const
    const_iterator end() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cend()const
    const_iterator cend() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::hash_function()const
    hasher hash_function() const;
 
    //! @copydoc ::boost::intrusive::hashtable::key_eq()const
    key_equal key_eq() const;
 
    //! @copydoc ::boost::intrusive::hashtable::empty()const
    bool empty() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::size()const
    size_type size() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable
    void swap(unordered_set_impl& other);
 
    //! @copydoc ::boost::intrusive::hashtable::clone_from(const hashtable&,Cloner,Disposer)
    template <class Cloner, class Disposer>
    void clone_from(const unordered_set_impl &src, Cloner cloner, Disposer disposer);
 
    #else
 
    using table_type::clone_from;
 
    #endif //#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
    //! @copydoc ::boost::intrusive::hashtable::clone_from(hashtable&&,Cloner,Disposer)
    template <class Cloner, class Disposer>
    BOOST_INTRUSIVE_FORCEINLINE void clone_from(BOOST_RV_REF(unordered_set_impl) src, Cloner cloner, Disposer disposer)
    {  table_type::clone_from(BOOST_MOVE_BASE(table_type, src), cloner, disposer);  }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_unique(reference)
    BOOST_INTRUSIVE_FORCEINLINE std::pair<iterator, bool> insert(reference value)
    {  return table_type::insert_unique(value);  }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_unique(Iterator,Iterator)
    template<class Iterator>
    BOOST_INTRUSIVE_FORCEINLINE void insert(Iterator b, Iterator e)
    {  table_type::insert_unique(b, e);  }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_unique_check(const key_type&,insert_commit_data&)
    BOOST_INTRUSIVE_FORCEINLINE std::pair<iterator, bool> insert_check(const key_type &key, insert_commit_data &commit_data)
    {  return table_type::insert_unique_check(key, commit_data); }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_unique_check(const KeyType&,KeyHasher,KeyEqual,insert_commit_data&)
    template<class KeyType, class KeyHasher, class KeyEqual>
    BOOST_INTRUSIVE_FORCEINLINE std::pair<iterator, bool> insert_check
       (const KeyType &key, KeyHasher hash_func, KeyEqual key_value_equal, insert_commit_data &commit_data)
    {  return table_type::insert_unique_check(key, hash_func, key_value_equal, commit_data); }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_unique_commit
    BOOST_INTRUSIVE_FORCEINLINE iterator insert_commit(reference value, const insert_commit_data &commit_data) BOOST_NOEXCEPT
    {  return table_type::insert_unique_commit(value, commit_data); }
 
    #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const_iterator)
    void erase(const_iterator i);
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const_iterator,const_iterator)
    void erase(const_iterator b, const_iterator e) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const key_type &)
    size_type erase(const key_type &key);
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const KeyType&,KeyHasher,KeyEqual)
    template<class KeyType, class KeyHasher, class KeyEqual>
    size_type erase(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func);
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const_iterator,Disposer)
    template<class Disposer>
    BOOST_INTRUSIVE_DOC1ST(void
       , typename detail::disable_if_convertible<Disposer BOOST_INTRUSIVE_I const_iterator>::type)
       erase_and_dispose(const_iterator i, Disposer disposer) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const_iterator,const_iterator,Disposer)
    template<class Disposer>
    void erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const key_type &,Disposer)
    template<class Disposer>
    size_type erase_and_dispose(const key_type &key, Disposer disposer);
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const KeyType&,KeyHasher,KeyEqual,Disposer)
    template<class KeyType, class KeyHasher, class KeyEqual, class Disposer>
    size_type erase_and_dispose(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func, Disposer disposer);
 
    //! @copydoc ::boost::intrusive::hashtable::clear
    void clear() BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::clear_and_dispose
    template<class Disposer>
    void clear_and_dispose(Disposer disposer) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::count(const key_type &)const
    size_type count(const key_type &key) const;
 
    //! @copydoc ::boost::intrusive::hashtable::count(const KeyType&,KeyHasher,KeyEqual)const
    template<class KeyType, class KeyHasher, class KeyEqual>
    size_type count(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func) const;
 
    //! @copydoc ::boost::intrusive::hashtable::find(const key_type &)
    iterator find(const key_type &key);
 
    //! @copydoc ::boost::intrusive::hashtable::find(const KeyType &,KeyHasher,KeyEqual)
    template<class KeyType, class KeyHasher, class KeyEqual>
    iterator find(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func);
 
    //! @copydoc ::boost::intrusive::hashtable::count(const key_type &)const
    const_iterator find(const key_type &key) const;
 
    //! @copydoc ::boost::intrusive::hashtable::find(const KeyType &,KeyHasher,KeyEqual)const
    template<class KeyType, class KeyHasher, class KeyEqual>
    const_iterator find(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func) const;
    #endif
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const key_type&)
    std::pair<iterator,iterator> equal_range(const key_type &key)
    {  return this->equal_range(key, this->hash_function(), this->key_eq());  }
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const KeyType &,KeyHasher,KeyEqual)
    template<class KeyType, class KeyHasher, class KeyEqual>
    std::pair<iterator,iterator> equal_range(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func)
    {  return this->priv_equal_range<iterator>(*this, key, hash_func, equal_func); }
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const key_type&)const
    std::pair<const_iterator, const_iterator>
       equal_range(const key_type &key) const
    {  return this->equal_range(key, this->hash_function(), this->key_eq());  }
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const KeyType &,KeyHasher,KeyEqual)const
    template<class KeyType, class KeyHasher, class KeyEqual>
    std::pair<const_iterator, const_iterator>
       equal_range(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func) const
    {  return this->priv_equal_range<const_iterator>(*this, key, hash_func, equal_func); }
 
    #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
    //! @copydoc ::boost::intrusive::hashtable::iterator_to(reference)
    iterator iterator_to(reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::iterator_to(const_reference)const
    const_iterator iterator_to(const_reference value) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::s_local_iterator_to(reference)
    static local_iterator s_local_iterator_to(reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::s_local_iterator_to(const_reference)
    static const_local_iterator s_local_iterator_to(const_reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::local_iterator_to(reference)
    local_iterator local_iterator_to(reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::local_iterator_to(const_reference)
    const_local_iterator local_iterator_to(const_reference value) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket_count
    size_type bucket_count() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket_size
    size_type bucket_size(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket(const key_type&)const
    size_type bucket(const key_type& k) const;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket(const KeyType&,KeyHasher)const
    template<class KeyType, class KeyHasher>
    size_type bucket(const KeyType& k,  KeyHasher hash_func) const;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket_pointer
    bucket_ptr bucket_pointer() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::begin(size_type)
    local_iterator begin(size_type n) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::begin(size_type)const
    const_local_iterator begin(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cbegin(size_type)const
    const_local_iterator cbegin(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end(size_type)
    local_iterator end(size_type n) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end(size_type)const
    const_local_iterator end(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cend(size_type)const
    const_local_iterator cend(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::rehash(const bucket_traits &)
    void rehash(const bucket_traits &new_bucket_traits);
 
    //! @copydoc ::boost::intrusive::hashtable::full_rehash
    void full_rehash();
 
    //! @copydoc ::boost::intrusive::hashtable::incremental_rehash(bool)
    bool incremental_rehash(bool grow = true);
 
    //! @copydoc ::boost::intrusive::hashtable::incremental_rehash(const bucket_traits &)
    bool incremental_rehash(const bucket_traits &new_bucket_traits);
 
    //! @copydoc ::boost::intrusive::hashtable::split_count
    size_type split_count() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::suggested_upper_bucket_count
    static size_type suggested_upper_bucket_count(size_type n) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::suggested_lower_bucket_count
    static size_type suggested_lower_bucket_count(size_type n) BOOST_NOEXCEPT;
 
    #endif   //   #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
    friend bool operator==(const unordered_set_impl &x, const unordered_set_impl &y)
    {
       if(table_type::constant_time_size && x.size() != y.size()){
          return false;
       }
       //Find each element of x in y
       for (const_iterator ix = x.cbegin(), ex = x.cend(), ey = y.cend(); ix != ex; ++ix){
          const_iterator iy = y.find(key_of_value()(*ix));
          if (iy == ey || !(*ix == *iy))
             return false;
       }
       return true;
    }
 
    friend bool operator!=(const unordered_set_impl &x, const unordered_set_impl &y)
    {  return !(x == y); }
 
    friend bool operator<(const unordered_set_impl &x, const unordered_set_impl &y)
    {  return ::boost::intrusive::algo_lexicographical_compare(x.begin(), x.end(), y.begin(), y.end());  }
 
    friend bool operator>(const unordered_set_impl &x, const unordered_set_impl &y)
    {  return y < x;  }
 
    friend bool operator<=(const unordered_set_impl &x, const unordered_set_impl &y)
    {  return !(y < x);  }
 
    friend bool operator>=(const unordered_set_impl &x, const unordered_set_impl &y)
    {  return !(x < y);  }
 };
 
 //! Helper metafunction to define an \c unordered_set that yields to the same type when the
 //! same options (either explicitly or implicitly) are used.
 #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
 template<class T, class ...Options>
 #else
 template<class T, class O1 = void, class O2 = void
                 , class O3 = void, class O4 = void
                 , class O5 = void, class O6 = void
                 , class O7 = void, class O8 = void
                 , class O9 = void, class O10= void
                 , class O11 = void
                 >
 #endif
 struct make_unordered_set
 {
    /// @cond
    typedef typename pack_options
       < hashtable_defaults,
          #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
          O1, O2, O3, O4, O5, O6, O7, O8, O9, O10, O11
          #else
          Options...
          #endif
       >::type packed_options;
 
    typedef typename detail::get_value_traits
       <T, typename packed_options::proto_value_traits>::type value_traits;
 
    typedef typename make_bucket_traits
             <T, packed_options>::type bucket_traits;
 
    typedef unordered_set_impl
       < value_traits
       , typename packed_options::key_of_value
       , typename packed_options::hash
       , typename packed_options::equal
       , typename packed_options::size_type
       , bucket_traits
       ,  (std::size_t(true)*hash_bool_flags::unique_keys_pos)
       |  (std::size_t(packed_options::constant_time_size)*hash_bool_flags::constant_time_size_pos)
       |  (std::size_t(packed_options::power_2_buckets)*hash_bool_flags::power_2_buckets_pos)
       |  (std::size_t(packed_options::cache_begin)*hash_bool_flags::cache_begin_pos)
       |  (std::size_t(packed_options::compare_hash)*hash_bool_flags::compare_hash_pos)
       |  (std::size_t(packed_options::incremental)*hash_bool_flags::incremental_pos)
       |  (std::size_t(packed_options::linear_buckets)*hash_bool_flags::linear_buckets_pos)
       |  (std::size_t(packed_options::fastmod_buckets)*hash_bool_flags::fastmod_buckets_pos)
       > implementation_defined;
 
    /// @endcond
    typedef implementation_defined type;
 };
 
 #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
 #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
 template<class T, class O1, class O2, class O3, class O4, class O5, class O6, class O7, class O8, class O9, class O10, class O11>
 #else
 template<class T, class ...Options>
 #endif
 class unordered_set
    :  public make_unordered_set<T,
          #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
          O1, O2, O3, O4, O5, O6, O7, O8, O9, O10, O11
          #else
          Options...
          #endif
       >::type
 {
    typedef typename make_unordered_set<T,
          #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
          O1, O2, O3, O4, O5, O6, O7, O8, O9, O10, O11
          #else
          Options...
          #endif
       >::type Base;
 
    //Assert if passed value traits are compatible with the type
    BOOST_STATIC_ASSERT((detail::is_same<typename Base::value_traits::value_type, T>::value));
    BOOST_MOVABLE_BUT_NOT_COPYABLE(unordered_set)
 
    public:
    typedef typename Base::value_traits       value_traits;
    typedef typename Base::bucket_traits      bucket_traits;
    typedef typename Base::iterator           iterator;
    typedef typename Base::const_iterator     const_iterator;
    typedef typename Base::bucket_ptr         bucket_ptr;
    typedef typename Base::size_type          size_type;
    typedef typename Base::hasher             hasher;
    typedef typename Base::key_equal          key_equal;
 
    BOOST_INTRUSIVE_FORCEINLINE
    explicit unordered_set  ( const bucket_traits &b_traits
                            , const hasher & hash_func = hasher()
                            , const key_equal &equal_func = key_equal()
                            , const value_traits &v_traits = value_traits())
       :  Base(b_traits, hash_func, equal_func, v_traits)
    {}
 
    template<class Iterator>
    BOOST_INTRUSIVE_FORCEINLINE
    unordered_set
                   ( Iterator b, Iterator e
                   , const bucket_traits &b_traits
                   , const hasher & hash_func = hasher()
                   , const key_equal &equal_func = key_equal()
                   , const value_traits &v_traits = value_traits())
       :  Base(b, e, b_traits, hash_func, equal_func, v_traits)
    {}
 
    BOOST_INTRUSIVE_FORCEINLINE unordered_set(BOOST_RV_REF(unordered_set) x)
       :  Base(BOOST_MOVE_BASE(Base, x))
    {}
 
    BOOST_INTRUSIVE_FORCEINLINE unordered_set& operator=(BOOST_RV_REF(unordered_set) x)
    {  return static_cast<unordered_set&>(this->Base::operator=(BOOST_MOVE_BASE(Base, x)));  }
 
    template <class Cloner, class Disposer>
    BOOST_INTRUSIVE_FORCEINLINE void clone_from(const unordered_set &src, Cloner cloner, Disposer disposer)
    {  this->Base::clone_from(src, cloner, disposer);  }
 
    template <class Cloner, class Disposer>
    BOOST_INTRUSIVE_FORCEINLINE void clone_from(BOOST_RV_REF(unordered_set) src, Cloner cloner, Disposer disposer)
    {  this->Base::clone_from(BOOST_MOVE_BASE(Base, src), cloner, disposer);  }
 };
 
 #endif
 
 
 //! The class template unordered_multiset is an intrusive container, that mimics most of
 //! the interface of std::tr1::unordered_multiset as described in the C++ TR1.
 //!
 //! unordered_multiset is a semi-intrusive container: each object to be stored in the
 //! container must contain a proper hook, but the container also needs
 //! additional auxiliary memory to work: unordered_multiset needs a pointer to an array
 //! of type `bucket_type` to be passed in the constructor. This bucket array must
 //! have at least the same lifetime as the container. This makes the use of
 //! unordered_multiset more complicated than purely intrusive containers.
 //! `bucket_type` is default-constructible, copyable and assignable
 //!
 //! The template parameter \c T is the type to be managed by the container.
 //! The user can specify additional options and if no options are provided
 //! default options are used.
 //!
 //! The container supports the following options:
 //! \c base_hook<>/member_hook<>/value_traits<>,
 //! \c constant_time_size<>, \c size_type<>, \c hash<> and \c equal<>
 //! \c bucket_traits<>, \c power_2_buckets<> and \c cache_begin<>.
 //!
 //! unordered_multiset only provides forward iterators but it provides 4 iterator types:
 //! iterator and const_iterator to navigate through the whole container and
 //! local_iterator and const_local_iterator to navigate through the values
 //! stored in a single bucket. Local iterators are faster and smaller.
 //!
 //! It's not recommended to use non constant-time size unordered_multisets because several
 //! key functions, like "empty()", become non-constant time functions. Non
 //! constant-time size unordered_multisets are mainly provided to support auto-unlink hooks.
 //!
 //! unordered_multiset, unlike std::unordered_set, does not make automatic rehashings nor
 //! offers functions related to a load factor. Rehashing can be explicitly requested
 //! and the user must provide a new bucket array that will be used from that moment.
 //!
 //! Since no automatic rehashing is done, iterators are never invalidated when
 //! inserting or erasing elements. Iterators are only invalidated when rehasing.
 #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED)
 template<class T, class ...Options>
 #else
 template<class ValueTraits, class VoidOrKeyOfValue, class VoidOrKeyHash, class VoidOrKeyEqual, class SizeType, class BucketTraits, std::size_t BoolFlags>
 #endif
 class unordered_multiset_impl
    #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
    : public hashtable_impl<ValueTraits, VoidOrKeyOfValue, VoidOrKeyHash, VoidOrKeyEqual, BucketTraits, SizeType, BoolFlags>
    #endif
 {
    /// @cond
    private:
    typedef hashtable_impl<ValueTraits, VoidOrKeyOfValue, VoidOrKeyHash, VoidOrKeyEqual, BucketTraits, SizeType, BoolFlags> table_type;
    /// @endcond
 
    //Movable
    BOOST_MOVABLE_BUT_NOT_COPYABLE(unordered_multiset_impl)
 
    typedef table_type implementation_defined;
 
    public:
    typedef typename implementation_defined::value_type                  value_type;
    typedef typename implementation_defined::key_type                    key_type;
    typedef typename implementation_defined::value_traits                value_traits;
    typedef typename implementation_defined::bucket_traits               bucket_traits;
    typedef typename implementation_defined::pointer                     pointer;
    typedef typename implementation_defined::const_pointer               const_pointer;
    typedef typename implementation_defined::reference                   reference;
    typedef typename implementation_defined::const_reference             const_reference;
    typedef typename implementation_defined::difference_type             difference_type;
    typedef typename implementation_defined::size_type                   size_type;
    typedef typename implementation_defined::key_equal                   key_equal;
    typedef typename implementation_defined::hasher                      hasher;
    typedef typename implementation_defined::bucket_type                 bucket_type;
    typedef typename implementation_defined::bucket_ptr                  bucket_ptr;
    typedef typename implementation_defined::iterator                    iterator;
    typedef typename implementation_defined::const_iterator              const_iterator;
    typedef typename implementation_defined::insert_commit_data          insert_commit_data;
    typedef typename implementation_defined::local_iterator              local_iterator;
    typedef typename implementation_defined::const_local_iterator        const_local_iterator;
    typedef typename implementation_defined::node_traits                 node_traits;
    typedef typename implementation_defined::node                        node;
    typedef typename implementation_defined::node_ptr                    node_ptr;
    typedef typename implementation_defined::const_node_ptr              const_node_ptr;
 
    public:
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable(const bucket_traits &,const hasher &,const key_equal &,const value_traits &)
    BOOST_INTRUSIVE_FORCEINLINE explicit unordered_multiset_impl ( const bucket_traits &b_traits
                                     , const hasher & hash_func = hasher()
                                     , const key_equal &equal_func = key_equal()
                                     , const value_traits &v_traits = value_traits())
       :  table_type(b_traits, hash_func, equal_func, v_traits)
    {}
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable(bool,Iterator,Iterator,const bucket_traits &,const hasher &,const key_equal &,const value_traits &)
    template<class Iterator>
    BOOST_INTRUSIVE_FORCEINLINE unordered_multiset_impl ( Iterator b
                            , Iterator e
                            , const bucket_traits &b_traits
                            , const hasher & hash_func = hasher()
                            , const key_equal &equal_func = key_equal()
                            , const value_traits &v_traits = value_traits())
       :  table_type(false, b, e, b_traits, hash_func, equal_func, v_traits)
    {}
 
    //! <b>Effects</b>: to-do
    //!
    BOOST_INTRUSIVE_FORCEINLINE unordered_multiset_impl(BOOST_RV_REF(unordered_multiset_impl) x)
       :  table_type(BOOST_MOVE_BASE(table_type, x))
    {}
 
    //! <b>Effects</b>: to-do
    //!
    BOOST_INTRUSIVE_FORCEINLINE unordered_multiset_impl& operator=(BOOST_RV_REF(unordered_multiset_impl) x)
    {  return static_cast<unordered_multiset_impl&>(table_type::operator=(BOOST_MOVE_BASE(table_type, x)));  }
 
    #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
    //! @copydoc ::boost::intrusive::hashtable::~hashtable()
    ~unordered_multiset_impl();
 
    //! @copydoc ::boost::intrusive::hashtable::begin()
    iterator begin() BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::begin()const
    const_iterator begin() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cbegin()const
    const_iterator cbegin() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end()
    iterator end() BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end()const
    const_iterator end() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cend()const
    const_iterator cend() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::hash_function()const
    hasher hash_function() const;
 
    //! @copydoc ::boost::intrusive::hashtable::key_eq()const
    key_equal key_eq() const;
 
    //! @copydoc ::boost::intrusive::hashtable::empty()const
    bool empty() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::size()const
    size_type size() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::hashtable
    void swap(unordered_multiset_impl& other);
 
    //! @copydoc ::boost::intrusive::hashtable::clone_from(const hashtable&,Cloner,Disposer)
    template <class Cloner, class Disposer>
    void clone_from(const unordered_multiset_impl &src, Cloner cloner, Disposer disposer);
 
    #else
 
    using table_type::clone_from;
 
    #endif   //   #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
    //! @copydoc ::boost::intrusive::hashtable::clone_from(hashtable&&,Cloner,Disposer)
    template <class Cloner, class Disposer>
    BOOST_INTRUSIVE_FORCEINLINE void clone_from(BOOST_RV_REF(unordered_multiset_impl) src, Cloner cloner, Disposer disposer)
    {  table_type::clone_from(BOOST_MOVE_BASE(table_type, src), cloner, disposer);  }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_equal(reference)
    BOOST_INTRUSIVE_FORCEINLINE iterator insert(reference value)
    {  return table_type::insert_equal(value);  }
 
    //! @copydoc ::boost::intrusive::hashtable::insert_equal(Iterator,Iterator)
    template<class Iterator>
    BOOST_INTRUSIVE_FORCEINLINE void insert(Iterator b, Iterator e)
    {  table_type::insert_equal(b, e);  }
 
    #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const_iterator)
    void erase(const_iterator i);
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const_iterator,const_iterator)
    void erase(const_iterator b, const_iterator e) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const key_type &)
    size_type erase(const key_type &key);
 
    //! @copydoc ::boost::intrusive::hashtable::erase(const KeyType&,KeyHasher,KeyEqual)
    template<class KeyType, class KeyHasher, class KeyEqual>
    size_type erase(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func);
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const_iterator,Disposer)
    template<class Disposer>
    BOOST_INTRUSIVE_DOC1ST(void
       , typename detail::disable_if_convertible<Disposer BOOST_INTRUSIVE_I const_iterator>::type)
       erase_and_dispose(const_iterator i, Disposer disposer) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const_iterator,const_iterator,Disposer)
    template<class Disposer>
    void erase_and_dispose(const_iterator b, const_iterator e, Disposer disposer) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const key_type &,Disposer)
    template<class Disposer>
    size_type erase_and_dispose(const key_type &key, Disposer disposer);
 
    //! @copydoc ::boost::intrusive::hashtable::erase_and_dispose(const KeyType&,KeyHasher,KeyEqual,Disposer)
    template<class KeyType, class KeyHasher, class KeyEqual, class Disposer>
    size_type erase_and_dispose(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func, Disposer disposer);
 
    //! @copydoc ::boost::intrusive::hashtable::clear
    void clear() BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::clear_and_dispose
    template<class Disposer>
    void clear_and_dispose(Disposer disposer) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::count(const key_type &)const
    size_type count(const key_type &key) const;
 
    //! @copydoc ::boost::intrusive::hashtable::count(const KeyType&,KeyHasher,KeyEqual)const
    template<class KeyType, class KeyHasher, class KeyEqual>
    size_type count(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func) const;
 
    //! @copydoc ::boost::intrusive::hashtable::find(const key_type &)
    iterator find(const key_type &key);
 
    //! @copydoc ::boost::intrusive::hashtable::find(const KeyType &,KeyHasher,KeyEqual)
    template<class KeyType, class KeyHasher, class KeyEqual>
    iterator find(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func);
 
    //! @copydoc ::boost::intrusive::hashtable::count(const key_type &)const
    const_iterator find(const key_type &key) const;
 
    //! @copydoc ::boost::intrusive::hashtable::find(const KeyType &,KeyHasher,KeyEqual)const
    template<class KeyType, class KeyHasher, class KeyEqual>
    const_iterator find(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func) const;
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const key_type&)
    std::pair<iterator,iterator> equal_range(const key_type &key);
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const KeyType &,KeyHasher,KeyEqual)
    template<class KeyType, class KeyHasher, class KeyEqual>
    std::pair<iterator,iterator> equal_range(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func);
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const key_type&)const
    std::pair<const_iterator, const_iterator>
       equal_range(const key_type &key) const;
 
    //! @copydoc ::boost::intrusive::hashtable::equal_range(const KeyType &,KeyHasher,KeyEqual)const
    template<class KeyType, class KeyHasher, class KeyEqual>
    std::pair<const_iterator, const_iterator>
       equal_range(const KeyType& key, KeyHasher hash_func, KeyEqual equal_func) const;
 
    //! @copydoc ::boost::intrusive::hashtable::iterator_to(reference)
    iterator iterator_to(reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::iterator_to(const_reference)const
    const_iterator iterator_to(const_reference value) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::s_local_iterator_to(reference)
    static local_iterator s_local_iterator_to(reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::s_local_iterator_to(const_reference)
    static const_local_iterator s_local_iterator_to(const_reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::local_iterator_to(reference)
    local_iterator local_iterator_to(reference value) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::local_iterator_to(const_reference)
    const_local_iterator local_iterator_to(const_reference value) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket_count
    size_type bucket_count() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket_size
    size_type bucket_size(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket(const key_type&)const
    size_type bucket(const key_type& k) const;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket(const KeyType&,KeyHasher)const
    template<class KeyType, class KeyHasher>
    size_type bucket(const KeyType& k, KeyHasher hash_func) const;
 
    //! @copydoc ::boost::intrusive::hashtable::bucket_pointer
    bucket_ptr bucket_pointer() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::begin(size_type)
    local_iterator begin(size_type n) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::begin(size_type)const
    const_local_iterator begin(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cbegin(size_type)const
    const_local_iterator cbegin(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end(size_type)
    local_iterator end(size_type n) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::end(size_type)const
    const_local_iterator end(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::cend(size_type)const
    const_local_iterator cend(size_type n) const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::rehash(const bucket_traits &)
    void rehash(const bucket_traits &new_bucket_traits);
 
    //! @copydoc ::boost::intrusive::hashtable::full_rehash
    void full_rehash();
 
    //! @copydoc ::boost::intrusive::hashtable::incremental_rehash(bool)
    bool incremental_rehash(bool grow = true);
 
    //! @copydoc ::boost::intrusive::hashtable::incremental_rehash(const bucket_traits &)
    bool incremental_rehash(const bucket_traits &new_bucket_traits);
 
    //! @copydoc ::boost::intrusive::hashtable::split_count
    size_type split_count() const BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::suggested_upper_bucket_count
    static size_type suggested_upper_bucket_count(size_type n) BOOST_NOEXCEPT;
 
    //! @copydoc ::boost::intrusive::hashtable::suggested_lower_bucket_count
    static size_type suggested_lower_bucket_count(size_type n) BOOST_NOEXCEPT;
 
    #endif   //   #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 };
 
 //! Helper metafunction to define an \c unordered_multiset that yields to the same type when the
 //! same options (either explicitly or implicitly) are used.
 #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) || defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
 template<class T, class ...Options>
 #else
 template<class T, class O1 = void, class O2 = void
                 , class O3 = void, class O4 = void
                 , class O5 = void, class O6 = void
                 , class O7 = void, class O8 = void
                 , class O9 = void, class O10= void
                 , class O11 = void
                 >
 #endif
 struct make_unordered_multiset
 {
    /// @cond
    typedef typename pack_options
       < hashtable_defaults,
          #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
          O1, O2, O3, O4, O5, O6, O7, O8, O9, O10, O11
          #else
          Options...
          #endif
       >::type packed_options;
 
    typedef typename detail::get_value_traits
       <T, typename packed_options::proto_value_traits>::type value_traits;
 
    typedef typename make_bucket_traits
             <T, packed_options>::type bucket_traits;
 
    typedef unordered_multiset_impl
       < value_traits
       , typename packed_options::key_of_value
       , typename packed_options::hash
       , typename packed_options::equal
       , typename packed_options::size_type
       , bucket_traits
       ,  (std::size_t(false)*hash_bool_flags::unique_keys_pos)
       |  (std::size_t(packed_options::constant_time_size)*hash_bool_flags::constant_time_size_pos)
       |  (std::size_t(packed_options::power_2_buckets)*hash_bool_flags::power_2_buckets_pos)
       |  (std::size_t(packed_options::cache_begin)*hash_bool_flags::cache_begin_pos)
       |  (std::size_t(packed_options::compare_hash)*hash_bool_flags::compare_hash_pos)
       |  (std::size_t(packed_options::incremental)*hash_bool_flags::incremental_pos)
       |  (std::size_t(packed_options::linear_buckets)*hash_bool_flags::linear_buckets_pos)
       |  (std::size_t(packed_options::fastmod_buckets)*hash_bool_flags::fastmod_buckets_pos)
       > implementation_defined;
 
    /// @endcond
    typedef implementation_defined type;
 };
 
 #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
 
 #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
 template<class T, class O1, class O2, class O3, class O4, class O5, class O6, class O7, class O8, class O9, class O10, class O11>
 #else
 template<class T, class ...Options>
 #endif
 class unordered_multiset
    :  public make_unordered_multiset<T,
          #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
          O1, O2, O3, O4, O5, O6, O7, O8, O9, O10, O11
          #else
          Options...
          #endif
       >::type
 {
    typedef typename make_unordered_multiset
       <T,
          #if !defined(BOOST_INTRUSIVE_VARIADIC_TEMPLATES)
          O1, O2, O3, O4, O5, O6, O7, O8, O9, O10
          #else
          Options...
          #endif
       >::type   Base;
    //Assert if passed value traits are compatible with the type
    BOOST_STATIC_ASSERT((detail::is_same<typename Base::value_traits::value_type, T>::value));
    BOOST_MOVABLE_BUT_NOT_COPYABLE(unordered_multiset)
 
    public:
    typedef typename Base::value_traits       value_traits;
    typedef typename Base::bucket_traits      bucket_traits;
    typedef typename Base::iterator           iterator;
    typedef typename Base::const_iterator     const_iterator;
    typedef typename Base::bucket_ptr         bucket_ptr;
    typedef typename Base::size_type          size_type;
    typedef typename Base::hasher             hasher;
    typedef typename Base::key_equal          key_equal;
 
    BOOST_INTRUSIVE_FORCEINLINE
    explicit unordered_multiset( const bucket_traits &b_traits
                               , const hasher & hash_func = hasher()
                               , const key_equal &equal_func = key_equal()
                               , const value_traits &v_traits = value_traits())
       :  Base(b_traits, hash_func, equal_func, v_traits)
    {}
 
    template<class Iterator>
    BOOST_INTRUSIVE_FORCEINLINE
    unordered_multiset( Iterator b
                      , Iterator e
                      , const bucket_traits &b_traits
                      , const hasher & hash_func = hasher()
                      , const key_equal &equal_func = key_equal()
                      , const value_traits &v_traits = value_traits())
       :  Base(b, e, b_traits, hash_func, equal_func, v_traits)
    {}
 
    BOOST_INTRUSIVE_FORCEINLINE unordered_multiset(BOOST_RV_REF(unordered_multiset) x)
       :  Base(BOOST_MOVE_BASE(Base, x))
    {}
 
    BOOST_INTRUSIVE_FORCEINLINE unordered_multiset& operator=(BOOST_RV_REF(unordered_multiset) x)
    {  return static_cast<unordered_multiset&>(this->Base::operator=(BOOST_MOVE_BASE(Base, x)));  }
 
    template <class Cloner, class Disposer>
    BOOST_INTRUSIVE_FORCEINLINE void clone_from(const unordered_multiset &src, Cloner cloner, Disposer disposer)
    {  this->Base::clone_from(src, cloner, disposer);  }
 
    template <class Cloner, class Disposer>
    BOOST_INTRUSIVE_FORCEINLINE void clone_from(BOOST_RV_REF(unordered_multiset) src, Cloner cloner, Disposer disposer)
    {  this->Base::clone_from(BOOST_MOVE_BASE(Base, src), cloner, disposer);  }
 };
 
 #endif
 
 } //namespace intrusive
 } //namespace boost
 
 #include <boost/intrusive/detail/config_end.hpp>
 
 #endif //BOOST_INTRUSIVE_UNORDERED_SET_HPP

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