map::rend


public member function
      reverse_iterator rend();
const_reverse_iterator rend() const;

Return reverse iterator to reverse end

Returns a reverse iterator referring to the element right before the first element in the map container, which is considered its reverse end.

Notice that rend does not refer to the same element as begin, but to the element right before it.

Parameters

none

Return Value

A reverse iterator to the reverse end of the sequence.

Both reverse_iterator and const_reverse_iterator are member types. In the map class template, these are reverse bidirectional iterators, defined as reverse_iterator<iterator> and reverse_iterator<const_iterator> respectively.

Dereferencing this iterator accesses the element's value, which is of type pair<const Key,T>.

Example

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// map::rbegin/rend
#include <iostream>
#include <map>
using namespace std;

int main ()
{
  map<char,int> mymap;
  map<char,int>::reverse_iterator rit;

  mymap['x'] = 100;
  mymap['y'] = 200;
  mymap['z'] = 300;

  // show content:
  for ( rit=mymap.rbegin() ; rit != mymap.rend(); rit++ )
    cout << rit->first << " => " << rit->second << endl;

  return 0;
}


Output:
z => 300
y => 200
x => 100


Complexity

Constant.

See also

map::rbegin Return reverse iterator to reverse beginning (public member function)
map::begin Return iterator to beginning (public member function)
map::end Return iterator to end (public member function)