public member function

std::operator--

<iterator>
reverse_iterator& operator--();
reverse_iterator  operator--(int);
Decrease iterator position
Moves the reverse_iterator backwards by one position.

This in fact moves one position forward the base iterator kept internally.

Parameters

none (the second version is for the post-increment operator).

Return value

The reverse iterator itself (*this).

Example

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// reverse_iterator::operator-- example
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;

int main () {
  vector<int> myvector;
  for (int i=0; i<10; i++) myvector.push_back(i);

  typedef vector<int>::iterator iter_int;

  reverse_iterator<iter_int> rev_begin (myvector.end());
  reverse_iterator<iter_int> rev_end (myvector.begin());

  reverse_iterator<iter_int> rev_iterator = rev_begin;

  while ( rev_iterator != rev_end )
    cout << *rev_iterator++ << " ";
  cout << endl;

    while ( rev_iterator != rev_begin )
    cout << *(--rev_iterator) << " ";
  cout << endl;

  return 0;
}


Output:

9 8 7 6 5 4 3 2 1 0
0 1 2 3 4 5 6 7 8 9

See also