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std::reverse_iterator

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C++
 
Iterator Bibliothek
Iterator Primitiven
Original:
Iterator primitives
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iterator_traits
input_iterator_tag
output_iterator_tag
forward_iterator_tag
bidirectional_iterator_tag
random_access_iterator_tag
iterator
Iterator Adaptern
Original:
Iterator adaptors
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reverse_iterator
Stream-Iteratoren
Original:
Stream iterators
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istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Iterator Operationen
Original:
Iterator operations
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advance
distance
prev(C++11)
next(C++11)
Reichen Zugang
Original:
Range access
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begin(C++11)
end(C++11)
 
std::reverse_iterator
Member-Funktionen
Original:
Member functions
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reverse_iterator::reverse_iterator
reverse_iterator::operator=
reverse_iterator::base
reverse_iterator::operator*
reverse_iterator::operator->
reverse_iterator::operator[]
reverse_iterator::operator++
reverse_iterator::operator+
reverse_iterator::operator+=
reverse_iterator::operator--
reverse_iterator::operator-
reverse_iterator::operator-=
Non-Member-Funktionen
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Non-member functions
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operator==
operator!=
operator<
operator>
operator+
operator-
 
definiert in Header <iterator>
template< class Iterator >

class reverse_iterator : public std::iterator<
                           typename std::iterator_traits<Iterator>::iterator_category,
                           typename std::iterator_traits<Iterator>::value_type,
                           typename std::iterator_traits<Iterator>::difference_type,
                           typename std::iterator_traits<Iterator>::pointer,

                           typename std::iterator_traits<Iterator>::reference >
std::reverse_iterator ist ein Iterator-Adapter, die die Richtung eines gegebenen Iterator umkehrt. Mit anderen Worten, wenn es mit einem bidirektionalen Iterator vorgesehen ist, erzeugt einen neuen std::reverse_iterator Iterator, der vom Ende bewegt sich zum Beginn der Sequenz von der zugrundeliegenden bidirektionalen Iterator definiert .
Original:
std::reverse_iterator is an iterator adaptor that reverses the direction of a given iterator. In other words, when provided with a bidirectional iterator, std::reverse_iterator produces a new iterator that moves from the end to the beginning of the sequence defined by the underlying bidirectional iterator.
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Für einen umgekehrten Iterator r aus einem Iterator i gebaut, ist die Beziehung &*r == &*(i-1) immer wahr, so ein Reverse-Iterator hergestellt aus einem ein-past-the-end iterator dereferences auf das letzte Element in einer Sequenz .
Original:
For a reverse iterator r constructed from an iterator i, the relationship &*r == &*(i-1) is always true; thus a reverse iterator constructed from a one-past-the-end iterator dereferences to the last element in a sequence.
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Dies ist der Iterator um Elementfunktionen rbegin() und rend() der Standard-Bibliothek Container zurückgegeben .
Original:
This is the iterator returned by member functions rbegin() and rend() of the standard library containers.
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Inhaltsverzeichnis

[Bearbeiten] Mitglied Typen

Mitglied Typ
Original:
Member type
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 Definition
iterator_type Iterator
difference_type std::iterator_traits<Iterator>::difference_type
pointer std::iterator_traits<Iterator>::pointer
reference std::iterator_traits<Iterator>::reference

[Bearbeiten] Member-Funktionen
baut einen neuen Iterator-Adapter
Original:
constructs a new iterator adaptor
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(öffentliche Elementfunktion) [edit]
ordnet eine andere Iterator
Original:
assigns another iterator
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(öffentliche Elementfunktion) [edit]
greift auf die zugrunde liegenden Iterator
Original:
accesses the underlying iterator
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(öffentliche Elementfunktion) [edit]
greift auf die spitzen-to-Element
Original:
accesses the pointed-to element
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(öffentliche Elementfunktion) [edit]
erhält rvalue Bezug auf indizierte Element
Original:
obtains rvalue reference to indexed element
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(öffentliche Elementfunktion) [edit]
Vorschüsse oder dekrementiert den Iterator
Original:
advances or decrements the iterator
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(öffentliche Elementfunktion) [edit]

[Bearbeiten] Mitglied widerspricht

Member name
Original:
Member name
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 Definition
current (geschützt)
eine Kopie des base () Iterator
Original:
a copy of the base() iterator
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Zusätzlich zu dem aktuellen Wert des zugrundeliegenden Iterator, hält eine typische Implementierung eines std::reverse_iterator dekrementiert Kopie des zugrundeliegenden Iterator, der in Dereferenzieren verwendet wird .
Original:
In addition to the current value of the underlying iterator, a typical implementation of std::reverse_iterator holds a decremented copy of the underlying iterator, which is used in dereferencing.
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[Bearbeiten] Non-Member-Funktionen
vergleicht die zugrunde liegenden Iteratoren
Original:
compares the underlying iterators
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(Funktions-Template) [edit]
Fortschritte der Iterator
Original:
advances the iterator
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(Funktions-Template) [edit]
berechnet den Abstand zwischen zwei Iterator Adaptern
Original:
computes the distance between two iterator adaptors
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(Funktions-Template) [edit]

Inherited from std::iterator

Member types

Mitglied Typ
Original:
Member type
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 Definition
value_type  std::iterator_traits<Iterator>::value_type
difference_type  std::iterator_traits<Iterator>::difference_type
pointer  std::iterator_traits<Iterator>::pointer
reference  std::iterator_traits<Iterator>::reference
iterator_category  std::iterator_traits<Iterator>::iterator_category

[Bearbeiten] Beispiel

#include <iostream>
#include <string>
#include <iterator>
 
int main()
{
    std::string s = "Hello, world";
    std::reverse_iterator<std::string::iterator> r = s.rbegin();
    r[7] = 'O'; // replaces 'o' with 'O' 
    r += 7; // iterator now points at 'O'
    std::string rev(r, s.rend());
    std::cout << rev << '\n';
}

Output: 

OlleH

[Bearbeiten] Siehe auch
die grundlegende Iterator
Original:
the basic iterator
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(Klassen-Template) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/iterator/reverse_iterator&oldid=27036“