const_reference
typedef const T& const_reference;
typedef const charT& const_reference;
typedef const _Tp& const_reference;
typedef const _Tp& const_reference;
typedef bool const_reference;
typedef bool const_reference;
typedef reverse_iterator<const_iterator, value_type, const_reference,
typedef const value_type& const_reference;
typedef reverse_iterator<const_iterator, value_type, const_reference,
typedef typename _Ht::const_reference const_reference;
typedef typename _Ht::const_reference const_reference;
typedef typename _Ht::const_reference const_reference;
typedef typename _Ht::const_reference const_reference;
typedef const value_type& const_reference;
typedef const value_type& const_reference;
const_reference,difference_type>
typedef typename _Rep_type::const_reference const_reference;
typedef typename _Rep_type::const_reference const_reference;
typedef typename _Rep_type::const_reference const_reference;
typedef typename _Sequence::const_reference const_reference;
typedef typename _Sequence::const_reference const_reference;
typedef _CharT const_reference;
typedef reverse_iterator<const_iterator, value_type, const_reference,
typedef typename _Rep_type::const_reference const_reference;
typedef const value_type& const_reference;
typedef typename _Sequence::const_reference const_reference;
typedef const value_type& const_reference;
typedef _Rb_tree_iterator<value_type, const_reference, const_pointer>
const_reference, difference_type>
typedef const value_type& const_reference;
typedef reverse_iterator<const_iterator, value_type, const_reference,