public member function
<set>

std::set::rbegin

      reverse_iterator rbegin();
const_reverse_iterator rbegin() const;
      reverse_iterator rbegin() noexcept;
const_reverse_iterator rbegin() const noexcept;
Return reverse iterator to reverse beginning
Returns a reverse iterator pointing to the last element in the container (i.e., its reverse beginning).

Reverse iterators iterate backwards: increasing them moves them towards the beginning of the container.

rbegin points to the element preceding the one that would be pointed to by member end.

Parameters

none

Return Value

A reverse iterator to the reverse beginning of the sequence container.

If the set object is const-qualified, the function returns a const_reverse_iterator. Otherwise, it returns a reverse_iterator.

Member types reverse_iterator and const_reverse_iterator are reverse bidirectional iterator types pointing to elements. See set member types.

Example

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// set::rbegin/rend
#include <iostream>
#include <set>

int main ()
{
  int myints[] = {21,64,17,78,49};
  std::set<int> myset (myints,myints+5);

  std::set<int>::reverse_iterator rit;

  std::cout << "myset contains:";
  for (rit=myset.rbegin(); rit != myset.rend(); ++rit)
    std::cout << ' ' << *rit;

  std::cout << '\n';

  return 0;
}


Output:
myset contains: 78 64 49 21 17

Complexity

Constant.

Iterator validity

No changes.

Data races

The container is accessed (neither the const nor the non-const versions modify the container).
Concurrently accessing the elements of a set is safe.

Exception safety

No-throw guarantee: this member function never throws exceptions.
The copy construction or assignment of the returned iterator is also guaranteed to never throw.

See also

  • 997351548 2018-02-20
  • 903691547 2018-02-20
  • 9127171546 2018-02-20
  • 2234751545 2018-02-20
  • 1685381544 2018-02-20
  • 911091543 2018-02-20
  • 9281021542 2018-02-20
  • 632231541 2018-02-20
  • 9751491540 2018-02-20
  • 8333621539 2018-02-20
  • 995001538 2018-02-20
  • 6477441537 2018-02-20
  • 511981536 2018-02-19
  • 2072881535 2018-02-19
  • 6024461534 2018-02-19
  • 7594061533 2018-02-19
  • 9311341532 2018-02-19
  • 4928331531 2018-02-19
  • 38561530 2018-02-19
  • 7776611529 2018-02-19