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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.
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.
Output:
Concurrently accessing the elements of a set is safe.
The copy construction or assignment of the returned iterator is also guaranteed to never throw.
Reference
C library:
- <cassert> (assert.h)
- <cctype> (ctype.h)
- <cerrno> (errno.h)
-
<cfenv> (fenv.h)C++11
- <cfloat> (float.h)
-
<cinttypes> (inttypes.h)C++11
- <ciso646> (iso646.h)
- <climits> (limits.h)
- <clocale> (locale.h)
- <cmath> (math.h)
- <csetjmp> (setjmp.h)
- <csignal> (signal.h)
- <cstdarg> (stdarg.h)
-
<cstdbool> (stdbool.h)C++11
- <cstddef> (stddef.h)
-
<cstdint> (stdint.h)C++11
- <cstdio> (stdio.h)
- <cstdlib> (stdlib.h)
- <cstring> (string.h)
-
<ctgmath> (tgmath.h)C++11
- <ctime> (time.h)
-
<cuchar> (uchar.h)C++11
- <cwchar> (wchar.h)
- <cwctype> (wctype.h)
Containers:
-
<array>C++11
- <deque>
-
<forward_list>C++11
- <list>
- <map>
- <queue>
- <set>
- <stack>
-
<unordered_map>C++11
-
<unordered_set>C++11
- <vector>
-
Input/Output:
Multi-threading:
-
<atomic>C++11
-
<condition_variable>C++11
-
<future>C++11
-
<mutex>C++11
-
<thread>C++11
-
Other:
- <algorithm>
- <bitset>
-
<chrono>C++11
-
<codecvt>C++11
- <complex>
- <exception>
- <functional>
-
<initializer_list>C++11
- <iterator>
- <limits>
- <locale>
- <memory>
- <new>
- <numeric>
-
<random>C++11
-
<ratio>C++11
-
<regex>C++11
- <stdexcept>
- <string>
-
<system_error>C++11
-
<tuple>C++11
-
<type_traits>C++11
-
<typeindex>C++11
- <typeinfo>
- <utility>
- <valarray>
set
- set::~set
- set::set
member functions
- set::begin
-
set::cbeginC++11
-
set::cendC++11
- set::clear
- set::count
-
set::crbeginC++11
-
set::crendC++11
-
set::emplaceC++11
-
set::emplace_hintC++11
- set::empty
- set::end
- set::equal_range
- set::erase
- set::find
- set::get_allocator
- set::insert
- set::key_comp
- set::lower_bound
- set::max_size
- set::operator=
- set::rbegin
- set::rend
- set::size
- set::swap
- set::upper_bound
- set::value_comp
non-member overloads
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
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
noneReturn 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
|
|
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
- set::rend
- Return reverse iterator to reverse end (public member function)
- set::begin
- Return iterator to beginning (public member function)
- set::end
- Return iterator to end (public member function)
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Spotted an error? contact us