std::array<T,N>::rend, std::array<T,N>::crend
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reverse_iterator rend() noexcept; |
(1) | (since C++11) (constexpr since C++17) |
const_reverse_iterator rend() const noexcept; |
(2) | (since C++11) (constexpr since C++17) |
const_reverse_iterator crend() const noexcept; |
(3) | (since C++11) (constexpr since C++17) |
Returns a reverse iterator past the last element of the reversed *this. It corresponds to the element preceding the first element of the non-reversed *this.
This returned iterator only acts as a sentinel. It is not guaranteed to be dereferenceable.
Contents |
[edit] Return value
Reverse iterator to the element following the last element.
[edit] Complexity
Constant.
[edit] Example
Run this code
#include <algorithm> #include <iostream> #include <array> int main() { std::array<int, 11> a{1, 11, 35, 0, 12, 79, 76, 69, 40}; / Print elements of container in reverse order using const_reverse_iterator's. std::for_each(a.crbegin(), a.crend(), [](int e){ std::cout << e << ' '; }); std::cout << '\n'; / Modify each element of container using non-const reverse_iterator's. std::for_each(a.rbegin(), a.rend(), [](int& e){ e += 32; }); / Print elements as chars in reverse order using const_reverse_iterator's. std::for_each(a.crbegin(), a.crend(), [](char e){ std::cout << e; }); std::cout << '\n'; }
Output:
40 69 76 76 79 12 0 35 11 11 1 Hello, C++!
[edit] See also
| returns a reverse iterator to the beginning (public member function) [edit] | |
| (C++14) |
returns a reverse end iterator for a container or array (function template) [edit] |