focal (3) std::reverse_iterator.3cxx.gz

NAME

       std::reverse_iterator< _Iterator >

SYNOPSIS

       Inherits std::iterator< iterator_traits< _Iterator >::iterator_category, iterator_traits< _Iterator
       >::value_type, iterator_traits< _Iterator >::difference_type, iterator_traits< _Iterator >::pointer,
       iterator_traits< _Iterator >::reference >.

   Public Types
       typedef __traits_type::difference_type difference_type
       typedef iterator_traits< _Iterator >::iterator_category iterator_category
           One of the tag types.
       typedef _Iterator iterator_type
       typedef __traits_type::pointer pointer
       typedef __traits_type::reference reference
       typedef iterator_traits< _Iterator >::value_type value_type
           The type 'pointed to' by the iterator.

   Public Member Functions
       _GLIBCXX17_CONSTEXPR reverse_iterator ()
       _GLIBCXX17_CONSTEXPR reverse_iterator (const reverse_iterator &__x)
       template<typename _Iter > _GLIBCXX17_CONSTEXPR reverse_iterator (const reverse_iterator< _Iter > &__x)
       _GLIBCXX17_CONSTEXPR reverse_iterator (iterator_type __x)
       _GLIBCXX17_CONSTEXPR iterator_type base () const
       _GLIBCXX17_CONSTEXPR reference operator* () const
       _GLIBCXX17_CONSTEXPR reverse_iterator operator+ (difference_type __n) const
       _GLIBCXX17_CONSTEXPR reverse_iterator & operator++ ()
       _GLIBCXX17_CONSTEXPR reverse_iterator operator++ (int)
       _GLIBCXX17_CONSTEXPR reverse_iterator & operator+= (difference_type __n)
       _GLIBCXX17_CONSTEXPR reverse_iterator operator- (difference_type __n) const
       _GLIBCXX17_CONSTEXPR reverse_iterator & operator-- ()
       _GLIBCXX17_CONSTEXPR reverse_iterator operator-- (int)
       _GLIBCXX17_CONSTEXPR reverse_iterator & operator-= (difference_type __n)
       _GLIBCXX17_CONSTEXPR pointer operator-> () const
       _GLIBCXX17_CONSTEXPR reference operator[] (difference_type __n) const

   Protected Types
       typedef iterator_traits< _Iterator > __traits_type

   Protected Attributes
       _Iterator current

Detailed Description

   template<typename _Iterator>
       class std::reverse_iterator< _Iterator >" Bidirectional and random access iterators have corresponding
       reverse iterator adaptors that iterate through the data structure in the opposite direction. They have
       the same signatures as the corresponding iterators. The fundamental relation between a reverse iterator
       and its corresponding iterator i is established by the identity:

       &*(reverse_iterator(i)) == &*(i - 1)

       This mapping is dictated by the fact that while there is always a pointer past the end of an array, there
       might not be a valid pointer before the beginning of an array. [24.4.1]/1,2

       Reverse iterators can be tricky and surprising at first. Their semantics make sense, however, and the
       trickiness is a side effect of the requirement that the iterators must be safe.

       Definition at line 101 of file bits/stl_iterator.h.

Member Typedef Documentation

   typedef iterator_traits< _Iterator >::iterator_category  std::iterator< iterator_traits< _Iterator
       >::iterator_category , iterator_traits< _Iterator >::value_type , iterator_traits< _Iterator
       >::difference_type , iterator_traits< _Iterator >::pointer , iterator_traits< _Iterator >::reference
       >::iterator_category [inherited]
       One of the tag types.

       Definition at line 121 of file stl_iterator_base_types.h.

   typedef iterator_traits< _Iterator >::value_type  std::iterator< iterator_traits< _Iterator
       >::iterator_category , iterator_traits< _Iterator >::value_type , iterator_traits< _Iterator
       >::difference_type , iterator_traits< _Iterator >::pointer , iterator_traits< _Iterator >::reference
       >::value_type [inherited]
       The type 'pointed to' by the iterator.

       Definition at line 123 of file stl_iterator_base_types.h.

Author

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