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;
}
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Output:
z => 300
y => 200
x => 100
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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) |
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