diff DEPENDENCIES/generic/include/boost/container/map.hpp @ 16:2665513ce2d3

Add boost headers
author Chris Cannam
date Tue, 05 Aug 2014 11:11:38 +0100
parents
children c530137014c0
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DEPENDENCIES/generic/include/boost/container/map.hpp	Tue Aug 05 11:11:38 2014 +0100
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2012. 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/container for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_CONTAINER_MAP_HPP
+#define BOOST_CONTAINER_MAP_HPP
+
+#if defined(_MSC_VER)
+#  pragma once
+#endif
+
+#include <boost/container/detail/config_begin.hpp>
+#include <boost/container/detail/workaround.hpp>
+
+#include <boost/container/container_fwd.hpp>
+#include <utility>
+#include <functional>
+#include <memory>
+#include <boost/container/detail/tree.hpp>
+#include <boost/container/detail/value_init.hpp>
+#include <boost/type_traits/has_trivial_destructor.hpp>
+#include <boost/container/detail/mpl.hpp>
+#include <boost/container/detail/utilities.hpp>
+#include <boost/container/detail/pair.hpp>
+#include <boost/container/detail/type_traits.hpp>
+#include <boost/container/throw_exception.hpp>
+#include <boost/move/utility.hpp>
+#include <boost/move/detail/move_helpers.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/container/detail/value_init.hpp>
+#include <boost/detail/no_exceptions_support.hpp>
+
+namespace boost {
+namespace container {
+
+/// @cond
+// Forward declarations of operators == and <, needed for friend declarations.
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator==(const map<Key,T,Compare,Allocator>& x,
+                       const map<Key,T,Compare,Allocator>& y);
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator<(const map<Key,T,Compare,Allocator>& x,
+                      const map<Key,T,Compare,Allocator>& y);
+/// @endcond
+
+//! A map is a kind of associative container that supports unique keys (contains at
+//! most one of each key value) and provides for fast retrieval of values of another
+//! type T based on the keys. The map class supports bidirectional iterators.
+//!
+//! A map satisfies all of the requirements of a container and of a reversible
+//! container and of an associative container. For a
+//! map<Key,T> the key_type is Key and the value_type is std::pair<const Key,T>.
+//!
+//! Compare is the ordering function for Keys (e.g. <i>std::less<Key></i>).
+//!
+//! Allocator is the allocator to allocate the value_types
+//! (e.g. <i>allocator< std::pair<const Key, T> > </i>).
+#ifdef BOOST_CONTAINER_DOXYGEN_INVOKED
+template <class Key, class T, class Compare = std::less<Key>, class Allocator = std::allocator< std::pair< const Key, T> > >
+#else
+template <class Key, class T, class Compare, class Allocator>
+#endif
+class map
+{
+   /// @cond
+   private:
+   BOOST_COPYABLE_AND_MOVABLE(map)
+
+   typedef std::pair<const Key, T>  value_type_impl;
+   typedef container_detail::rbtree
+      <Key, value_type_impl, container_detail::select1st<value_type_impl>, Compare, Allocator> tree_t;
+   typedef container_detail::pair <Key, T> movable_value_type_impl;
+   typedef container_detail::tree_value_compare
+      < Key, value_type_impl, Compare, container_detail::select1st<value_type_impl>
+      >  value_compare_impl;
+   tree_t m_tree;  // red-black tree representing map
+   /// @endcond
+
+   public:
+   //////////////////////////////////////////////
+   //
+   //                    types
+   //
+   //////////////////////////////////////////////
+
+   typedef Key                                                                      key_type;
+   typedef T                                                                        mapped_type;
+   typedef std::pair<const Key, T>                                                  value_type;
+   typedef typename boost::container::allocator_traits<Allocator>::pointer          pointer;
+   typedef typename boost::container::allocator_traits<Allocator>::const_pointer    const_pointer;
+   typedef typename boost::container::allocator_traits<Allocator>::reference        reference;
+   typedef typename boost::container::allocator_traits<Allocator>::const_reference  const_reference;
+   typedef typename boost::container::allocator_traits<Allocator>::size_type        size_type;
+   typedef typename boost::container::allocator_traits<Allocator>::difference_type  difference_type;
+   typedef Allocator                                                                allocator_type;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::stored_allocator_type)           stored_allocator_type;
+   typedef BOOST_CONTAINER_IMPDEF(value_compare_impl)                               value_compare;
+   typedef Compare                                                                  key_compare;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::iterator)                        iterator;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::const_iterator)                  const_iterator;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::reverse_iterator)                reverse_iterator;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::const_reverse_iterator)          const_reverse_iterator;
+   typedef std::pair<key_type, mapped_type>                                         nonconst_value_type;
+   typedef BOOST_CONTAINER_IMPDEF(movable_value_type_impl)                          movable_value_type;
+
+   //////////////////////////////////////////////
+   //
+   //          construct/copy/destroy
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Default constructs an empty map.
+   //!
+   //! <b>Complexity</b>: Constant.
+   map()
+      : m_tree()
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty map using the specified comparison object
+   //! and allocator.
+   //!
+   //! <b>Complexity</b>: Constant.
+   explicit map(const Compare& comp,
+                const allocator_type& a = allocator_type())
+      : m_tree(comp, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty map using the specified allocator.
+   //!
+   //! <b>Complexity</b>: Constant.
+   explicit map(const allocator_type& a)
+      : m_tree(a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty map using the specified comparison object and
+   //! allocator, and inserts elements from the range [first ,last ).
+   //!
+   //! <b>Complexity</b>: Linear in N if the range [first ,last ) is already sorted using
+   //! comp and otherwise N logN, where N is last - first.
+   template <class InputIterator>
+   map(InputIterator first, InputIterator last, const Compare& comp = Compare(),
+         const allocator_type& a = allocator_type())
+      : m_tree(true, first, last, comp, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty map using the specified comparison object and
+   //! allocator, and inserts elements from the ordered unique range [first ,last). This function
+   //! is more efficient than the normal range creation for ordered ranges.
+   //!
+   //! <b>Requires</b>: [first ,last) must be ordered according to the predicate and must be
+   //! unique values.
+   //!
+   //! <b>Complexity</b>: Linear in N.
+   //!
+   //! <b>Note</b>: Non-standard extension.
+   template <class InputIterator>
+   map( ordered_unique_range_t, InputIterator first, InputIterator last
+      , const Compare& comp = Compare(), const allocator_type& a = allocator_type())
+      : m_tree(ordered_range, first, last, comp, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Copy constructs a map.
+   //!
+   //! <b>Complexity</b>: Linear in x.size().
+   map(const map& x)
+      : m_tree(x.m_tree)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Move constructs a map. Constructs *this using x's resources.
+   //!
+   //! <b>Complexity</b>: Constant.
+   //!
+   //! <b>Postcondition</b>: x is emptied.
+   map(BOOST_RV_REF(map) x)
+      : m_tree(boost::move(x.m_tree))
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Copy constructs a map using the specified allocator.
+   //!
+   //! <b>Complexity</b>: Linear in x.size().
+   map(const map& x, const allocator_type &a)
+      : m_tree(x.m_tree, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Move constructs a map using the specified allocator.
+   //!                 Constructs *this using x's resources.
+   //!
+   //! <b>Complexity</b>: Constant if x == x.get_allocator(), linear otherwise.
+   //!
+   //! <b>Postcondition</b>: x is emptied.
+   map(BOOST_RV_REF(map) x, const allocator_type &a)
+      : m_tree(boost::move(x.m_tree), a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Makes *this a copy of x.
+   //!
+   //! <b>Complexity</b>: Linear in x.size().
+   map& operator=(BOOST_COPY_ASSIGN_REF(map) x)
+   {  m_tree = x.m_tree;   return *this;  }
+
+   //! <b>Effects</b>: this->swap(x.get()).
+   //!
+   //! <b>Complexity</b>: Constant.
+   map& operator=(BOOST_RV_REF(map) x)
+   {  m_tree = boost::move(x.m_tree);   return *this;  }
+
+   //! <b>Effects</b>: Returns a copy of the Allocator that
+   //!   was passed to the object's constructor.
+   //!
+   //! <b>Complexity</b>: Constant.
+   allocator_type get_allocator() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.get_allocator(); }
+
+   //! <b>Effects</b>: Returns a reference to the internal allocator.
+   //!
+   //! <b>Throws</b>: Nothing
+   //!
+   //! <b>Complexity</b>: Constant.
+   //!
+   //! <b>Note</b>: Non-standard extension.
+   stored_allocator_type &get_stored_allocator() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.get_stored_allocator(); }
+
+   //! <b>Effects</b>: Returns a reference to the internal allocator.
+   //!
+   //! <b>Throws</b>: Nothing
+   //!
+   //! <b>Complexity</b>: Constant.
+   //!
+   //! <b>Note</b>: Non-standard extension.
+   const stored_allocator_type &get_stored_allocator() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.get_stored_allocator(); }
+
+   //////////////////////////////////////////////
+   //
+   //                iterators
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Returns an iterator to the first element contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   iterator begin() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.begin(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the first element contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator begin() const BOOST_CONTAINER_NOEXCEPT
+   { return this->cbegin(); }
+
+   //! <b>Effects</b>: Returns an iterator to the end of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   iterator end() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.end(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the end of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator end() const BOOST_CONTAINER_NOEXCEPT
+   { return this->cend(); }
+
+   //! <b>Effects</b>: Returns a reverse_iterator pointing to the beginning
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   reverse_iterator rbegin() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rbegin(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator rbegin() const BOOST_CONTAINER_NOEXCEPT
+   { return this->crbegin(); }
+
+   //! <b>Effects</b>: Returns a reverse_iterator pointing to the end
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   reverse_iterator rend() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rend(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator rend() const BOOST_CONTAINER_NOEXCEPT
+   { return this->crend(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the first element contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator cbegin() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.begin(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the end of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator cend() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.end(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator crbegin() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rbegin(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator crend() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rend(); }
+
+   //////////////////////////////////////////////
+   //
+   //                capacity
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Returns true if the container contains no elements.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   bool empty() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.empty(); }
+
+   //! <b>Effects</b>: Returns the number of the elements contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   size_type size() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.size(); }
+
+   //! <b>Effects</b>: Returns the largest possible size of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   size_type max_size() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.max_size(); }
+
+   //////////////////////////////////////////////
+   //
+   //               element access
+   //
+   //////////////////////////////////////////////
+
+   #if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+   //! Effects: If there is no key equivalent to x in the map, inserts
+   //! value_type(x, T()) into the map.
+   //!
+   //! Returns: Allocator reference to the mapped_type corresponding to x in *this.
+   //!
+   //! Complexity: Logarithmic.
+   mapped_type& operator[](const key_type &k);
+
+   //! Effects: If there is no key equivalent to x in the map, inserts
+   //! value_type(boost::move(x), T()) into the map (the key is move-constructed)
+   //!
+   //! Returns: Allocator reference to the mapped_type corresponding to x in *this.
+   //!
+   //! Complexity: Logarithmic.
+   mapped_type& operator[](key_type &&k);
+   #else
+   BOOST_MOVE_CONVERSION_AWARE_CATCH( operator[] , key_type, mapped_type&, this->priv_subscript)
+   #endif
+
+   //! Returns: Allocator reference to the element whose key is equivalent to x.
+   //! Throws: An exception object of type out_of_range if no such element is present.
+   //! Complexity: logarithmic.
+   T& at(const key_type& k)
+   {
+      iterator i = this->find(k);
+      if(i == this->end()){
+         throw_out_of_range("map::at key not found");
+      }
+      return i->second;
+   }
+
+   //! Returns: Allocator reference to the element whose key is equivalent to x.
+   //! Throws: An exception object of type out_of_range if no such element is present.
+   //! Complexity: logarithmic.
+   const T& at(const key_type& k) const
+   {
+      const_iterator i = this->find(k);
+      if(i == this->end()){
+         throw_out_of_range("map::at key not found");
+      }
+      return i->second;
+   }
+
+   //////////////////////////////////////////////
+   //
+   //                modifiers
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Inserts x if and only if there is no element in the container
+   //!   with key equivalent to the key of x.
+   //!
+   //! <b>Returns</b>: The bool component of the returned pair is true if and only
+   //!   if the insertion takes place, and the iterator component of the pair
+   //!   points to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   std::pair<iterator,bool> insert(const value_type& x)
+   { return m_tree.insert_unique(x); }
+
+   //! <b>Effects</b>: Inserts a new value_type created from the pair if and only if
+   //! there is no element in the container  with key equivalent to the key of x.
+   //!
+   //! <b>Returns</b>: The bool component of the returned pair is true if and only
+   //!   if the insertion takes place, and the iterator component of the pair
+   //!   points to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   std::pair<iterator,bool> insert(const nonconst_value_type& x)
+   { return m_tree.insert_unique(x); }
+
+   //! <b>Effects</b>: Inserts a new value_type move constructed from the pair if and
+   //! only if there is no element in the container with key equivalent to the key of x.
+   //!
+   //! <b>Returns</b>: The bool component of the returned pair is true if and only
+   //!   if the insertion takes place, and the iterator component of the pair
+   //!   points to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   std::pair<iterator,bool> insert(BOOST_RV_REF(nonconst_value_type) x)
+   { return m_tree.insert_unique(boost::move(x)); }
+
+   //! <b>Effects</b>: Inserts a new value_type move constructed from the pair if and
+   //! only if there is no element in the container with key equivalent to the key of x.
+   //!
+   //! <b>Returns</b>: The bool component of the returned pair is true if and only
+   //!   if the insertion takes place, and the iterator component of the pair
+   //!   points to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   std::pair<iterator,bool> insert(BOOST_RV_REF(movable_value_type) x)
+   { return m_tree.insert_unique(boost::move(x)); }
+
+   //! <b>Effects</b>: Move constructs a new value from x if and only if there is
+   //!   no element in the container with key equivalent to the key of x.
+   //!
+   //! <b>Returns</b>: The bool component of the returned pair is true if and only
+   //!   if the insertion takes place, and the iterator component of the pair
+   //!   points to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   std::pair<iterator,bool> insert(BOOST_RV_REF(value_type) x)
+   { return m_tree.insert_unique(boost::move(x)); }
+
+   //! <b>Effects</b>: Inserts a copy of x in the container if and only if there is
+   //!   no element in the container with key equivalent to the key of x.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, const value_type& x)
+   { return m_tree.insert_unique(position, x); }
+
+   //! <b>Effects</b>: Move constructs a new value from x if and only if there is
+   //!   no element in the container with key equivalent to the key of x.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, BOOST_RV_REF(nonconst_value_type) x)
+   { return m_tree.insert_unique(position, boost::move(x)); }
+
+   //! <b>Effects</b>: Move constructs a new value from x if and only if there is
+   //!   no element in the container with key equivalent to the key of x.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, BOOST_RV_REF(movable_value_type) x)
+   { return m_tree.insert_unique(position, boost::move(x)); }
+
+   //! <b>Effects</b>: Inserts a copy of x in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator insert(const_iterator position, const nonconst_value_type& x)
+   { return m_tree.insert_unique(position, x); }
+
+   //! <b>Effects</b>: Inserts an element move constructed from x in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator insert(const_iterator position, BOOST_RV_REF(value_type) x)
+   { return m_tree.insert_unique(position, boost::move(x)); }
+
+   //! <b>Requires</b>: first, last are not iterators into *this.
+   //!
+   //! <b>Effects</b>: inserts each element from the range [first,last) if and only
+   //!   if there is no element with key equivalent to the key of that element.
+   //!
+   //! <b>Complexity</b>: At most N log(size()+N) (N is the distance from first to last)
+   template <class InputIterator>
+   void insert(InputIterator first, InputIterator last)
+   {  m_tree.insert_unique(first, last);  }
+
+   #if defined(BOOST_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+
+   //! <b>Effects</b>: Inserts an object x of type T constructed with
+   //!   std::forward<Args>(args)... in the container if and only if there is
+   //!   no element in the container with an equivalent key.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: The bool component of the returned pair is true if and only
+   //!   if the insertion takes place, and the iterator component of the pair
+   //!   points to the element with key equivalent to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   template <class... Args>
+   std::pair<iterator,bool> emplace(Args&&... args)
+   {  return m_tree.emplace_unique(boost::forward<Args>(args)...); }
+
+   //! <b>Effects</b>: Inserts an object of type T constructed with
+   //!   std::forward<Args>(args)... in the container if and only if there is
+   //!   no element in the container with an equivalent key.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   template <class... Args>
+   iterator emplace_hint(const_iterator hint, Args&&... args)
+   {  return m_tree.emplace_hint_unique(hint, boost::forward<Args>(args)...); }
+
+   #else //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING
+
+   #define BOOST_PP_LOCAL_MACRO(n)                                                                 \
+   BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >)          \
+   std::pair<iterator,bool> emplace(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_LIST, _))            \
+   {  return m_tree.emplace_unique(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); }       \
+                                                                                                   \
+   BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >)          \
+   iterator emplace_hint(const_iterator hint                                                       \
+                         BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _))              \
+   {  return m_tree.emplace_hint_unique(hint                                                       \
+                               BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _));}   \
+   //!
+   #define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
+   #include BOOST_PP_LOCAL_ITERATE()
+
+   #endif   //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING
+
+   //! <b>Effects</b>: Erases the element pointed to by position.
+   //!
+   //! <b>Returns</b>: Returns an iterator pointing to the element immediately
+   //!   following q prior to the element being erased. If no such element exists,
+   //!   returns end().
+   //!
+   //! <b>Complexity</b>: Amortized constant time
+   iterator erase(const_iterator position) BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.erase(position); }
+
+   //! <b>Effects</b>: Erases all elements in the container with key equivalent to x.
+   //!
+   //! <b>Returns</b>: Returns the number of erased elements.
+   //!
+   //! <b>Complexity</b>: log(size()) + count(k)
+   size_type erase(const key_type& x) BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.erase(x); }
+
+   //! <b>Effects</b>: Erases all the elements in the range [first, last).
+   //!
+   //! <b>Returns</b>: Returns last.
+   //!
+   //! <b>Complexity</b>: log(size())+N where N is the distance from first to last.
+   iterator erase(const_iterator first, const_iterator last) BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.erase(first, last); }
+
+   //! <b>Effects</b>: Swaps the contents of *this and x.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   void swap(map& x)
+   { m_tree.swap(x.m_tree); }
+
+   //! <b>Effects</b>: erase(a.begin(),a.end()).
+   //!
+   //! <b>Postcondition</b>: size() == 0.
+   //!
+   //! <b>Complexity</b>: linear in size().
+   void clear() BOOST_CONTAINER_NOEXCEPT
+   { m_tree.clear(); }
+
+   //////////////////////////////////////////////
+   //
+   //                observers
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Returns the comparison object out
+   //!   of which a was constructed.
+   //!
+   //! <b>Complexity</b>: Constant.
+   key_compare key_comp() const
+   { return m_tree.key_comp(); }
+
+   //! <b>Effects</b>: Returns an object of value_compare constructed out
+   //!   of the comparison object.
+   //!
+   //! <b>Complexity</b>: Constant.
+   value_compare value_comp() const
+   { return value_compare(m_tree.key_comp()); }
+
+   //////////////////////////////////////////////
+   //
+   //              map operations
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Returns</b>: An iterator pointing to an element with the key
+   //!   equivalent to x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator find(const key_type& x)
+   { return m_tree.find(x); }
+
+   //! <b>Returns</b>: Allocator const_iterator pointing to an element with the key
+   //!   equivalent to x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   const_iterator find(const key_type& x) const
+   { return m_tree.find(x); }
+
+   //! <b>Returns</b>: The number of elements with key equivalent to x.
+   //!
+   //! <b>Complexity</b>: log(size())+count(k)
+   size_type count(const key_type& x) const
+   {  return static_cast<size_type>(m_tree.find(x) != m_tree.end());  }
+
+   //! <b>Returns</b>: An iterator pointing to the first element with key not less
+   //!   than k, or a.end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   iterator lower_bound(const key_type& x)
+   {  return m_tree.lower_bound(x); }
+
+   //! <b>Returns</b>: Allocator const iterator pointing to the first element with key not
+   //!   less than k, or a.end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   const_iterator lower_bound(const key_type& x) const
+   {  return m_tree.lower_bound(x); }
+
+   //! <b>Returns</b>: An iterator pointing to the first element with key not less
+   //!   than x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   iterator upper_bound(const key_type& x)
+   {  return m_tree.upper_bound(x); }
+
+   //! <b>Returns</b>: Allocator const iterator pointing to the first element with key not
+   //!   less than x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   const_iterator upper_bound(const key_type& x) const
+   {  return m_tree.upper_bound(x); }
+
+   //! <b>Effects</b>: Equivalent to std::make_pair(this->lower_bound(k), this->upper_bound(k)).
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   std::pair<iterator,iterator> equal_range(const key_type& x)
+   {  return m_tree.equal_range(x); }
+
+   //! <b>Effects</b>: Equivalent to std::make_pair(this->lower_bound(k), this->upper_bound(k)).
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   std::pair<const_iterator,const_iterator> equal_range(const key_type& x) const
+   {  return m_tree.equal_range(x); }
+
+   /// @cond
+   template <class K1, class T1, class C1, class A1>
+   friend bool operator== (const map<K1, T1, C1, A1>&,
+                           const map<K1, T1, C1, A1>&);
+   template <class K1, class T1, class C1, class A1>
+   friend bool operator< (const map<K1, T1, C1, A1>&,
+                          const map<K1, T1, C1, A1>&);
+   private:
+   mapped_type& priv_subscript(const key_type &k)
+   {
+      //we can optimize this
+      iterator i = lower_bound(k);
+      // i->first is greater than or equivalent to k.
+      if (i == end() || key_comp()(k, (*i).first)){
+         container_detail::value_init<mapped_type> m;
+         movable_value_type val(k, boost::move(m.m_t));
+         i = insert(i, boost::move(val));
+      }
+      return (*i).second;
+   }
+
+   mapped_type& priv_subscript(BOOST_RV_REF(key_type) mk)
+   {
+      key_type &k = mk;
+      //we can optimize this
+      iterator i = lower_bound(k);
+      // i->first is greater than or equivalent to k.
+      if (i == end() || key_comp()(k, (*i).first)){
+         container_detail::value_init<mapped_type> m;
+         movable_value_type val(boost::move(k), boost::move(m.m_t));
+         i = insert(i, boost::move(val));
+      }
+      return (*i).second;
+   }
+
+   /// @endcond
+};
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator==(const map<Key,T,Compare,Allocator>& x,
+                       const map<Key,T,Compare,Allocator>& y)
+   {  return x.m_tree == y.m_tree;  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator<(const map<Key,T,Compare,Allocator>& x,
+                      const map<Key,T,Compare,Allocator>& y)
+   {  return x.m_tree < y.m_tree;   }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator!=(const map<Key,T,Compare,Allocator>& x,
+                       const map<Key,T,Compare,Allocator>& y)
+   {  return !(x == y); }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator>(const map<Key,T,Compare,Allocator>& x,
+                      const map<Key,T,Compare,Allocator>& y)
+   {  return y < x;  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator<=(const map<Key,T,Compare,Allocator>& x,
+                       const map<Key,T,Compare,Allocator>& y)
+   {  return !(y < x);  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator>=(const map<Key,T,Compare,Allocator>& x,
+                       const map<Key,T,Compare,Allocator>& y)
+   {  return !(x < y);  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline void swap(map<Key,T,Compare,Allocator>& x, map<Key,T,Compare,Allocator>& y)
+   {  x.swap(y);  }
+
+/// @cond
+
+// Forward declaration of operators < and ==, needed for friend declaration.
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator==(const multimap<Key,T,Compare,Allocator>& x,
+                       const multimap<Key,T,Compare,Allocator>& y);
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator<(const multimap<Key,T,Compare,Allocator>& x,
+                      const multimap<Key,T,Compare,Allocator>& y);
+
+}  //namespace container {
+
+//!has_trivial_destructor_after_move<> == true_type
+//!specialization for optimizations
+template <class K, class T, class C, class Allocator>
+struct has_trivial_destructor_after_move<boost::container::map<K, T, C, Allocator> >
+{
+   static const bool value = has_trivial_destructor_after_move<Allocator>::value && has_trivial_destructor_after_move<C>::value;
+};
+
+namespace container {
+
+/// @endcond
+
+//! A multimap is a kind of associative container that supports equivalent keys
+//! (possibly containing multiple copies of the same key value) and provides for
+//! fast retrieval of values of another type T based on the keys. The multimap class
+//! supports bidirectional iterators.
+//!
+//! A multimap satisfies all of the requirements of a container and of a reversible
+//! container and of an associative container. For a
+//! map<Key,T> the key_type is Key and the value_type is std::pair<const Key,T>.
+//!
+//! Compare is the ordering function for Keys (e.g. <i>std::less<Key></i>).
+//!
+//! Allocator is the allocator to allocate the value_types
+//!(e.g. <i>allocator< std::pair<<b>const</b> Key, T> ></i>).
+#ifdef BOOST_CONTAINER_DOXYGEN_INVOKED
+template <class Key, class T, class Compare = std::less<Key>, class Allocator = std::allocator< std::pair< const Key, T> > >
+#else
+template <class Key, class T, class Compare, class Allocator>
+#endif
+class multimap
+{
+   /// @cond
+   private:
+   BOOST_COPYABLE_AND_MOVABLE(multimap)
+
+   typedef std::pair<const Key, T>  value_type_impl;
+   typedef container_detail::rbtree
+      <Key, value_type_impl, container_detail::select1st<value_type_impl>, Compare, Allocator> tree_t;
+   typedef container_detail::pair <Key, T> movable_value_type_impl;
+   typedef container_detail::tree_value_compare
+      < Key, value_type_impl, Compare, container_detail::select1st<value_type_impl>
+      >  value_compare_impl;
+   tree_t m_tree;  // red-black tree representing map
+   /// @endcond
+
+   public:
+   //////////////////////////////////////////////
+   //
+   //                    types
+   //
+   //////////////////////////////////////////////
+
+   typedef Key                                                                      key_type;
+   typedef T                                                                        mapped_type;
+   typedef std::pair<const Key, T>                                                  value_type;
+   typedef typename boost::container::allocator_traits<Allocator>::pointer          pointer;
+   typedef typename boost::container::allocator_traits<Allocator>::const_pointer    const_pointer;
+   typedef typename boost::container::allocator_traits<Allocator>::reference        reference;
+   typedef typename boost::container::allocator_traits<Allocator>::const_reference  const_reference;
+   typedef typename boost::container::allocator_traits<Allocator>::size_type        size_type;
+   typedef typename boost::container::allocator_traits<Allocator>::difference_type  difference_type;
+   typedef Allocator                                                                allocator_type;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::stored_allocator_type)           stored_allocator_type;
+   typedef BOOST_CONTAINER_IMPDEF(value_compare_impl)                               value_compare;
+   typedef Compare                                                                  key_compare;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::iterator)                        iterator;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::const_iterator)                  const_iterator;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::reverse_iterator)                reverse_iterator;
+   typedef typename BOOST_CONTAINER_IMPDEF(tree_t::const_reverse_iterator)          const_reverse_iterator;
+   typedef std::pair<key_type, mapped_type>                                         nonconst_value_type;
+   typedef BOOST_CONTAINER_IMPDEF(movable_value_type_impl)                          movable_value_type;
+
+   //////////////////////////////////////////////
+   //
+   //          construct/copy/destroy
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Default constructs an empty multimap.
+   //!
+   //! <b>Complexity</b>: Constant.
+   multimap()
+      : m_tree()
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty multimap using the specified allocator.
+   //!
+   //! <b>Complexity</b>: Constant.
+   explicit multimap(const Compare& comp, const allocator_type& a = allocator_type())
+      : m_tree(comp, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty multimap using the specified comparison
+   //!   object and allocator.
+   //!
+   //! <b>Complexity</b>: Constant.
+   explicit multimap(const allocator_type& a)
+      : m_tree(a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty multimap using the specified comparison object
+   //!   and allocator, and inserts elements from the range [first ,last ).
+   //!
+   //! <b>Complexity</b>: Linear in N if the range [first ,last ) is already sorted using
+   //! comp and otherwise N logN, where N is last - first.
+   template <class InputIterator>
+   multimap(InputIterator first, InputIterator last,
+            const Compare& comp = Compare(),
+            const allocator_type& a = allocator_type())
+      : m_tree(false, first, last, comp, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Constructs an empty multimap using the specified comparison object and
+   //! allocator, and inserts elements from the ordered range [first ,last). This function
+   //! is more efficient than the normal range creation for ordered ranges.
+   //!
+   //! <b>Requires</b>: [first ,last) must be ordered according to the predicate.
+   //!
+   //! <b>Complexity</b>: Linear in N.
+   //!
+   //! <b>Note</b>: Non-standard extension.
+   template <class InputIterator>
+   multimap(ordered_range_t, InputIterator first, InputIterator last, const Compare& comp = Compare(),
+         const allocator_type& a = allocator_type())
+      : m_tree(ordered_range, first, last, comp, a)
+   {}
+
+   //! <b>Effects</b>: Copy constructs a multimap.
+   //!
+   //! <b>Complexity</b>: Linear in x.size().
+   multimap(const multimap& x)
+      : m_tree(x.m_tree)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Move constructs a multimap. Constructs *this using x's resources.
+   //!
+   //! <b>Complexity</b>: Constant.
+   //!
+   //! <b>Postcondition</b>: x is emptied.
+   multimap(BOOST_RV_REF(multimap) x)
+      : m_tree(boost::move(x.m_tree))
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Copy constructs a multimap.
+   //!
+   //! <b>Complexity</b>: Linear in x.size().
+   multimap(const multimap& x, const allocator_type &a)
+      : m_tree(x.m_tree, a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Move constructs a multimap using the specified allocator.
+   //!                 Constructs *this using x's resources.
+   //! <b>Complexity</b>: Constant if a == x.get_allocator(), linear otherwise.
+   //!
+   //! <b>Postcondition</b>: x is emptied.
+   multimap(BOOST_RV_REF(multimap) x, const allocator_type &a)
+      : m_tree(boost::move(x.m_tree), a)
+   {
+      //Allocator type must be std::pair<CONST Key, T>
+      BOOST_STATIC_ASSERT((container_detail::is_same<std::pair<const Key, T>, typename Allocator::value_type>::value));
+   }
+
+   //! <b>Effects</b>: Makes *this a copy of x.
+   //!
+   //! <b>Complexity</b>: Linear in x.size().
+   multimap& operator=(BOOST_COPY_ASSIGN_REF(multimap) x)
+   {  m_tree = x.m_tree;   return *this;  }
+
+   //! <b>Effects</b>: this->swap(x.get()).
+   //!
+   //! <b>Complexity</b>: Constant.
+   multimap& operator=(BOOST_RV_REF(multimap) x)
+   {  m_tree = boost::move(x.m_tree);   return *this;  }
+
+   //! <b>Effects</b>: Returns a copy of the Allocator that
+   //!   was passed to the object's constructor.
+   //!
+   //! <b>Complexity</b>: Constant.
+   allocator_type get_allocator() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.get_allocator(); }
+
+   //! <b>Effects</b>: Returns a reference to the internal allocator.
+   //!
+   //! <b>Throws</b>: Nothing
+   //!
+   //! <b>Complexity</b>: Constant.
+   //!
+   //! <b>Note</b>: Non-standard extension.
+   stored_allocator_type &get_stored_allocator() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.get_stored_allocator(); }
+
+   //! <b>Effects</b>: Returns a reference to the internal allocator.
+   //!
+   //! <b>Throws</b>: Nothing
+   //!
+   //! <b>Complexity</b>: Constant.
+   //!
+   //! <b>Note</b>: Non-standard extension.
+   const stored_allocator_type &get_stored_allocator() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.get_stored_allocator(); }
+
+   //////////////////////////////////////////////
+   //
+   //                iterators
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Returns an iterator to the first element contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   iterator begin() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.begin(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the first element contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator begin() const BOOST_CONTAINER_NOEXCEPT
+   { return this->cbegin(); }
+
+   //! <b>Effects</b>: Returns an iterator to the end of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   iterator end() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.end(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the end of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator end() const BOOST_CONTAINER_NOEXCEPT
+   { return this->cend(); }
+
+   //! <b>Effects</b>: Returns a reverse_iterator pointing to the beginning
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   reverse_iterator rbegin() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rbegin(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator rbegin() const BOOST_CONTAINER_NOEXCEPT
+   { return this->crbegin(); }
+
+   //! <b>Effects</b>: Returns a reverse_iterator pointing to the end
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   reverse_iterator rend() BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rend(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator rend() const BOOST_CONTAINER_NOEXCEPT
+   { return this->crend(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the first element contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator cbegin() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.begin(); }
+
+   //! <b>Effects</b>: Returns a const_iterator to the end of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_iterator cend() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.end(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator crbegin() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rbegin(); }
+
+   //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end
+   //! of the reversed container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   const_reverse_iterator crend() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.rend(); }
+
+   //////////////////////////////////////////////
+   //
+   //                capacity
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Returns true if the container contains no elements.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   bool empty() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.empty(); }
+
+   //! <b>Effects</b>: Returns the number of the elements contained in the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   size_type size() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.size(); }
+
+   //! <b>Effects</b>: Returns the largest possible size of the container.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   size_type max_size() const BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.max_size(); }
+
+   //////////////////////////////////////////////
+   //
+   //                modifiers
+   //
+   //////////////////////////////////////////////
+
+   #if defined(BOOST_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
+
+   //! <b>Effects</b>: Inserts an object of type T constructed with
+   //!   std::forward<Args>(args)... in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   template <class... Args>
+   iterator emplace(Args&&... args)
+   {  return m_tree.emplace_equal(boost::forward<Args>(args)...); }
+
+   //! <b>Effects</b>: Inserts an object of type T constructed with
+   //!   std::forward<Args>(args)... in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   template <class... Args>
+   iterator emplace_hint(const_iterator hint, Args&&... args)
+   {  return m_tree.emplace_hint_equal(hint, boost::forward<Args>(args)...); }
+
+   #else //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING
+
+   #define BOOST_PP_LOCAL_MACRO(n)                                                                 \
+   BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >)          \
+   iterator emplace(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_LIST, _))                            \
+   {  return m_tree.emplace_equal(BOOST_PP_ENUM(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _)); }        \
+                                                                                                   \
+   BOOST_PP_EXPR_IF(n, template<) BOOST_PP_ENUM_PARAMS(n, class P) BOOST_PP_EXPR_IF(n, >)          \
+   iterator emplace_hint(const_iterator hint                                                       \
+                         BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_LIST, _))              \
+   {  return m_tree.emplace_hint_equal(hint                                                        \
+                               BOOST_PP_ENUM_TRAILING(n, BOOST_CONTAINER_PP_PARAM_FORWARD, _));}   \
+   //!
+   #define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
+   #include BOOST_PP_LOCAL_ITERATE()
+
+   #endif   //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING
+
+   //! <b>Effects</b>: Inserts x and returns the iterator pointing to the
+   //!   newly inserted element.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator insert(const value_type& x)
+   { return m_tree.insert_equal(x); }
+
+   //! <b>Effects</b>: Inserts a new value constructed from x and returns
+   //!   the iterator pointing to the newly inserted element.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator insert(const nonconst_value_type& x)
+   { return m_tree.insert_equal(x); }
+
+   //! <b>Effects</b>: Inserts a new value move-constructed from x and returns
+   //!   the iterator pointing to the newly inserted element.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator insert(BOOST_RV_REF(nonconst_value_type) x)
+   { return m_tree.insert_equal(boost::move(x)); }
+
+   //! <b>Effects</b>: Inserts a new value move-constructed from x and returns
+   //!   the iterator pointing to the newly inserted element.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator insert(BOOST_RV_REF(movable_value_type) x)
+   { return m_tree.insert_equal(boost::move(x)); }
+
+   //! <b>Effects</b>: Inserts a copy of x in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, const value_type& x)
+   { return m_tree.insert_equal(position, x); }
+
+   //! <b>Effects</b>: Inserts a new value constructed from x in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, const nonconst_value_type& x)
+   { return m_tree.insert_equal(position, x); }
+
+   //! <b>Effects</b>: Inserts a new value move constructed from x in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, BOOST_RV_REF(nonconst_value_type) x)
+   { return m_tree.insert_equal(position, boost::move(x)); }
+
+   //! <b>Effects</b>: Inserts a new value move constructed from x in the container.
+   //!   p is a hint pointing to where the insert should start to search.
+   //!
+   //! <b>Returns</b>: An iterator pointing to the element with key equivalent
+   //!   to the key of x.
+   //!
+   //! <b>Complexity</b>: Logarithmic in general, but amortized constant if t
+   //!   is inserted right before p.
+   iterator insert(const_iterator position, BOOST_RV_REF(movable_value_type) x)
+   { return m_tree.insert_equal(position, boost::move(x)); }
+
+   //! <b>Requires</b>: first, last are not iterators into *this.
+   //!
+   //! <b>Effects</b>: inserts each element from the range [first,last) .
+   //!
+   //! <b>Complexity</b>: At most N log(size()+N) (N is the distance from first to last)
+   template <class InputIterator>
+   void insert(InputIterator first, InputIterator last)
+   {  m_tree.insert_equal(first, last); }
+
+   //! <b>Effects</b>: Erases the element pointed to by position.
+   //!
+   //! <b>Returns</b>: Returns an iterator pointing to the element immediately
+   //!   following q prior to the element being erased. If no such element exists,
+   //!   returns end().
+   //!
+   //! <b>Complexity</b>: Amortized constant time
+   iterator erase(const_iterator position) BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.erase(position); }
+
+   //! <b>Effects</b>: Erases all elements in the container with key equivalent to x.
+   //!
+   //! <b>Returns</b>: Returns the number of erased elements.
+   //!
+   //! <b>Complexity</b>: log(size()) + count(k)
+   size_type erase(const key_type& x) BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.erase(x); }
+
+   //! <b>Effects</b>: Erases all the elements in the range [first, last).
+   //!
+   //! <b>Returns</b>: Returns last.
+   //!
+   //! <b>Complexity</b>: log(size())+N where N is the distance from first to last.
+   iterator erase(const_iterator first, const_iterator last) BOOST_CONTAINER_NOEXCEPT
+   { return m_tree.erase(first, last); }
+
+   //! <b>Effects</b>: Swaps the contents of *this and x.
+   //!
+   //! <b>Throws</b>: Nothing.
+   //!
+   //! <b>Complexity</b>: Constant.
+   void swap(multimap& x)
+   { m_tree.swap(x.m_tree); }
+
+   //! <b>Effects</b>: erase(a.begin(),a.end()).
+   //!
+   //! <b>Postcondition</b>: size() == 0.
+   //!
+   //! <b>Complexity</b>: linear in size().
+   void clear() BOOST_CONTAINER_NOEXCEPT
+   { m_tree.clear(); }
+
+   //////////////////////////////////////////////
+   //
+   //                observers
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Effects</b>: Returns the comparison object out
+   //!   of which a was constructed.
+   //!
+   //! <b>Complexity</b>: Constant.
+   key_compare key_comp() const
+   { return m_tree.key_comp(); }
+
+   //! <b>Effects</b>: Returns an object of value_compare constructed out
+   //!   of the comparison object.
+   //!
+   //! <b>Complexity</b>: Constant.
+   value_compare value_comp() const
+   { return value_compare(m_tree.key_comp()); }
+
+   //////////////////////////////////////////////
+   //
+   //              map operations
+   //
+   //////////////////////////////////////////////
+
+   //! <b>Returns</b>: An iterator pointing to an element with the key
+   //!   equivalent to x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   iterator find(const key_type& x)
+   { return m_tree.find(x); }
+
+   //! <b>Returns</b>: Allocator const iterator pointing to an element with the key
+   //!   equivalent to x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic.
+   const_iterator find(const key_type& x) const
+   { return m_tree.find(x); }
+
+   //! <b>Returns</b>: The number of elements with key equivalent to x.
+   //!
+   //! <b>Complexity</b>: log(size())+count(k)
+   size_type count(const key_type& x) const
+   { return m_tree.count(x); }
+
+   //! <b>Returns</b>: An iterator pointing to the first element with key not less
+   //!   than k, or a.end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   iterator lower_bound(const key_type& x)
+   {return m_tree.lower_bound(x); }
+
+   //! <b>Returns</b>: Allocator const iterator pointing to the first element with key not
+   //!   less than k, or a.end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   const_iterator lower_bound(const key_type& x) const
+   {  return m_tree.lower_bound(x);  }
+
+   //! <b>Returns</b>: An iterator pointing to the first element with key not less
+   //!   than x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   iterator upper_bound(const key_type& x)
+   {  return m_tree.upper_bound(x); }
+
+   //! <b>Returns</b>: Allocator const iterator pointing to the first element with key not
+   //!   less than x, or end() if such an element is not found.
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   const_iterator upper_bound(const key_type& x) const
+   {  return m_tree.upper_bound(x); }
+
+   //! <b>Effects</b>: Equivalent to std::make_pair(this->lower_bound(k), this->upper_bound(k)).
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   std::pair<iterator,iterator> equal_range(const key_type& x)
+   {  return m_tree.equal_range(x);   }
+
+   //! <b>Effects</b>: Equivalent to std::make_pair(this->lower_bound(k), this->upper_bound(k)).
+   //!
+   //! <b>Complexity</b>: Logarithmic
+   std::pair<const_iterator,const_iterator> equal_range(const key_type& x) const
+   {  return m_tree.equal_range(x);   }
+
+   /// @cond
+   template <class K1, class T1, class C1, class A1>
+   friend bool operator== (const multimap<K1, T1, C1, A1>& x,
+                           const multimap<K1, T1, C1, A1>& y);
+
+   template <class K1, class T1, class C1, class A1>
+   friend bool operator< (const multimap<K1, T1, C1, A1>& x,
+                          const multimap<K1, T1, C1, A1>& y);
+   /// @endcond
+};
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator==(const multimap<Key,T,Compare,Allocator>& x,
+                       const multimap<Key,T,Compare,Allocator>& y)
+{  return x.m_tree == y.m_tree;  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator<(const multimap<Key,T,Compare,Allocator>& x,
+                      const multimap<Key,T,Compare,Allocator>& y)
+{  return x.m_tree < y.m_tree;   }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator!=(const multimap<Key,T,Compare,Allocator>& x,
+                       const multimap<Key,T,Compare,Allocator>& y)
+{  return !(x == y);  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator>(const multimap<Key,T,Compare,Allocator>& x,
+                      const multimap<Key,T,Compare,Allocator>& y)
+{  return y < x;  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator<=(const multimap<Key,T,Compare,Allocator>& x,
+                       const multimap<Key,T,Compare,Allocator>& y)
+{  return !(y < x);  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline bool operator>=(const multimap<Key,T,Compare,Allocator>& x,
+                       const multimap<Key,T,Compare,Allocator>& y)
+{  return !(x < y);  }
+
+template <class Key, class T, class Compare, class Allocator>
+inline void swap(multimap<Key,T,Compare,Allocator>& x, multimap<Key,T,Compare,Allocator>& y)
+{  x.swap(y);  }
+
+/// @cond
+
+}  //namespace container {
+
+//!has_trivial_destructor_after_move<> == true_type
+//!specialization for optimizations
+template <class K, class T, class C, class Allocator>
+struct has_trivial_destructor_after_move<boost::container::multimap<K, T, C, Allocator> >
+{
+   static const bool value = has_trivial_destructor_after_move<Allocator>::value && has_trivial_destructor_after_move<C>::value;
+};
+
+namespace container {
+
+/// @endcond
+
+}}
+
+#include <boost/container/detail/config_end.hpp>
+
+#endif /* BOOST_CONTAINER_MAP_HPP */
+