std::reverse_iterator< _Iterator >(3cxx) | std::reverse_iterator< _Iterator >(3cxx) |
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
Public Member Functions¶
reverse_iterator ()
Protected Types¶
typedef iterator_traits
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 96 of file 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.Constructor & Destructor Documentation¶
template<typename _Iterator> std::reverse_iterator< _Iterator >::reverse_iterator () [inline]¶
The default constructor value-initializes member current. If it is a pointer, that means it is zero-initialized. Definition at line 120 of file stl_iterator.h. Referenced by std::reverse_iterator< _Iterator >::operator+(), and std::reverse_iterator< _Iterator >::operator-().template<typename _Iterator> std::reverse_iterator< _Iterator >::reverse_iterator (iterator_type__x) [inline], [explicit]¶
This iterator will move in the opposite direction that x does. Definition at line 126 of file stl_iterator.h.template<typename _Iterator> std::reverse_iterator< _Iterator >::reverse_iterator (const reverse_iterator< _Iterator > &__x) [inline]¶
The copy constructor is normal. Definition at line 131 of file stl_iterator.h.template<typename _Iterator> template<typename _Iter > std::reverse_iterator< _Iterator >:: reverse_iterator (const reverse_iterator< _Iter > &__x) [inline]¶
A reverse_iterator across other types can be copied if the underlying iterator can be converted to the type of current. Definition at line 139 of file stl_iterator.h.Member Function Documentation¶
template<typename _Iterator> iterator_type std::reverse_iterator< _Iterator >::base () const [inline]¶
Returns:current, the iterator used for underlying work.
Definition at line 146 of file stl_iterator.h.
Referenced by std::operator==().
template<typename _Iterator> reference std::reverse_iterator< _Iterator >::operator* () const [inline]¶
Returns:A reference to the value at --current
This requires that --current is dereferenceable.
Warning:
This implementation requires that for an iterator of the
underlying iterator type, x, a reference obtained by *x remains valid after x
has been modified or destroyed. This is a bug:
http://gcc.gnu.org/PR51823
Definition at line 160 of file stl_iterator.h.
Referenced by std::reverse_iterator< _Iterator >::operator->().
template<typename _Iterator> reverse_iterator std::reverse_iterator< _Iterator >::operator+ (difference_type__n) const [inline]¶
Returns:A reverse_iterator that refers to current -
__n
The underlying iterator must be a Random Access Iterator.
Definition at line 231 of file stl_iterator.h.
References std::reverse_iterator< _Iterator >::reverse_iterator().
template<typename _Iterator> reverse_iterator& std::reverse_iterator< _Iterator >::operator++ () [inline]¶
Returns:*this
Decrements the underlying iterator.
Definition at line 181 of file stl_iterator.h.
template<typename _Iterator> reverse_iterator std::reverse_iterator< _Iterator >::operator++ (int) [inline]¶
Returns:The original value of *this
Decrements the underlying iterator.
Definition at line 193 of file stl_iterator.h.
template<typename _Iterator> reverse_iterator& std::reverse_iterator< _Iterator >::operator+= (difference_type__n) [inline]¶
Returns:*this
Moves the underlying iterator backwards __n steps. The underlying
iterator must be a Random Access Iterator.
Definition at line 241 of file stl_iterator.h.
template<typename _Iterator> reverse_iterator std::reverse_iterator< _Iterator >::operator- (difference_type__n) const [inline]¶
Returns:A reverse_iterator that refers to current -
__n
The underlying iterator must be a Random Access Iterator.
Definition at line 253 of file stl_iterator.h.
References std::reverse_iterator< _Iterator >::reverse_iterator().
template<typename _Iterator> reverse_iterator& std::reverse_iterator< _Iterator >::operator-- () [inline]¶
Returns:*this
Increments the underlying iterator.
Definition at line 206 of file stl_iterator.h.
template<typename _Iterator> reverse_iterator std::reverse_iterator< _Iterator >::operator-- (int) [inline]¶
Returns:A reverse_iterator with the previous value of *this
Increments the underlying iterator.
Definition at line 218 of file stl_iterator.h.
template<typename _Iterator> reverse_iterator& std::reverse_iterator< _Iterator >::operator-= (difference_type__n) [inline]¶
Returns:*this
Moves the underlying iterator forwards __n steps. The underlying iterator
must be a Random Access Iterator.
Definition at line 263 of file stl_iterator.h.
template<typename _Iterator> pointer std::reverse_iterator< _Iterator >::operator-> () const [inline]¶
Returns:A pointer to the value at --current
This requires that --current is dereferenceable.
Definition at line 172 of file stl_iterator.h.
References std::reverse_iterator< _Iterator >::operator*().
template<typename _Iterator> reference std::reverse_iterator< _Iterator >::operator[] (difference_type__n) const [inline]¶
Returns:The value at current - __n - 1
The underlying iterator must be a Random Access Iterator.
Definition at line 275 of file stl_iterator.h.
Author¶
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