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 92 of file stl_iterator.h.
typedef iterator_traits<_Iterator>::difference_type difference_type |
Distance between iterators is represented as this type.
Definition at line 105 of file stl_iterator.h.
typedef iterator_traits< _Iterator >::iterator_category iterator_category [inherited] |
One of the tag types.
Definition at line 109 of file stl_iterator_base_types.h.
typedef iterator_traits<_Iterator>::pointer pointer |
This type represents a pointer-to-value_type.
Definition at line 107 of file stl_iterator.h.
typedef iterator_traits<_Iterator>::reference reference |
This type represents a reference-to-value_type.
Definition at line 106 of file stl_iterator.h.
typedef iterator_traits< _Iterator >::value_type value_type [inherited] |
The type "pointed to" by the iterator.
Definition at line 111 of file stl_iterator_base_types.h.
reverse_iterator | ( | ) | [inline] |
The default constructor default-initializes member current
. If it is a pointer, that means it is zero-initialized.
Definition at line 116 of file stl_iterator.h.
Referenced by reverse_iterator< _Iterator >::operator+(), and reverse_iterator< _Iterator >::operator-().
reverse_iterator | ( | iterator_type | __x | ) | [inline, explicit] |
This iterator will move in the opposite direction that x
does.
Definition at line 122 of file stl_iterator.h.
reverse_iterator | ( | const reverse_iterator< _Iterator > & | __x | ) | [inline] |
The copy constructor is normal.
Definition at line 127 of file stl_iterator.h.
reverse_iterator | ( | const reverse_iterator< _Iter > & | __x | ) | [inline] |
A reverse_iterator across other types can be copied in the normal fashion.
Definition at line 135 of file stl_iterator.h.
iterator_type base | ( | ) | const [inline] |
current
, the iterator used for underlying work. Definition at line 142 of file stl_iterator.h.
Referenced by std::operator+(), std::operator-(), and std::operator==().
reference operator* | ( | ) | const [inline] |
Definition at line 151 of file stl_iterator.h.
Referenced by reverse_iterator< _Iterator >::operator->().
reverse_iterator operator+ | ( | difference_type | __n | ) | const [inline] |
Definition at line 222 of file stl_iterator.h.
References reverse_iterator< _Iterator >::reverse_iterator().
reverse_iterator operator++ | ( | int | ) | [inline] |
Definition at line 184 of file stl_iterator.h.
reverse_iterator& operator++ | ( | ) | [inline] |
Definition at line 172 of file stl_iterator.h.
reverse_iterator& operator+= | ( | difference_type | __n | ) | [inline] |
Definition at line 231 of file stl_iterator.h.
reverse_iterator operator- | ( | difference_type | __n | ) | const [inline] |
Definition at line 243 of file stl_iterator.h.
References reverse_iterator< _Iterator >::reverse_iterator().
reverse_iterator operator-- | ( | int | ) | [inline] |
Definition at line 209 of file stl_iterator.h.
reverse_iterator& operator-- | ( | ) | [inline] |
Definition at line 197 of file stl_iterator.h.
reverse_iterator& operator-= | ( | difference_type | __n | ) | [inline] |
Definition at line 252 of file stl_iterator.h.
pointer operator-> | ( | ) | const [inline] |
Definition at line 163 of file stl_iterator.h.
References reverse_iterator< _Iterator >::operator*().
reference operator[] | ( | difference_type | __n | ) | const [inline] |
Definition at line 264 of file stl_iterator.h.