public member function
<iterator>

std::reverse_iterator::operator*

reference operator*() const;
Dereference iterator
Returns a reference to the element pointed to by the iterator.

Internally, the function decreases a copy of its base iterator and returns the result of dereferencing it.

The iterator shall point to some object in order to be dereferenceable.

Parameters

none

Return value

A reference to the element pointed by the iterator.
Member type reference is an alias of the base iterator's own reference type.

Example

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// reverse_iterator example
#include <iostream>     // std::cout
#include <iterator>     // std::reverse_iterator
#include <vector>       // std::vector

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

  typedef std::vector<int>::iterator iter_type;
                                                         // ? 9 8 7 6 5 4 3 2 1 0 ?
  iter_type from (myvector.begin());                     //   ^
                                                         //         ------>
  iter_type until (myvector.end());                      //                       ^
                                                         //
  std::reverse_iterator<iter_type> rev_until (from);     // ^
                                                         //         <------
  std::reverse_iterator<iter_type> rev_from (until);     //                     ^

  std::cout << "myvector:";
  while (rev_from != rev_until)
    std::cout << ' ' << *rev_from++;
  std::cout << '\n';

  return 0;
}


Output:

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

Data races

The object is accessed.
The reference returned can be used to access or modify elements.

Exception safety

Provides the same level of guarantee as the operations internally applied to the base iterator.

See also