// In header: <boost/container/new_allocator.hpp>
template<typename T> 
class new_allocator {
public:
  // types
  typedef T                      value_type;                            
  typedef T *                    pointer;                               
  typedef const T *              const_pointer;                         
  typedef T &                    reference;                             
  typedef const T &              const_reference;                       
  typedef std::size_t            size_type;                             
  typedef std::ptrdiff_t         difference_type;                       
  typedef implementation_defined propagate_on_container_move_assignment;  // A integral constant of type bool with value true. 
  typedef implementation_defined is_always_equal;                         // A integral constant of type bool with value true. 
  // member classes/structs/unions
  template<typename T2> 
  struct rebind {
    // types
    typedef new_allocator< T2 > other;
  };
  // construct/copy/destruct
  new_allocator() noexcept;
  new_allocator(const new_allocator &) noexcept;
  template<typename T2> new_allocator(const new_allocator< T2 > &) noexcept;
  // public member functions
  pointer allocate(size_type);
  void deallocate(pointer, size_type) noexcept;
  size_type max_size() const noexcept;
  // friend functions
  friend void swap(new_allocator &, new_allocator &) noexcept;
  friend bool operator==(const new_allocator &, const new_allocator &) noexcept;
  friend bool operator!=(const new_allocator &, const new_allocator &) noexcept;
};