std::basic_string_view::rend, std::basic_string_view::crend

From cppreference.com
constexpr const_reverse_iterator rend() const noexcept;
(since C++17)
constexpr const_reverse_iterator crend() const noexcept;
(since C++17)

Returns a reverse iterator to the character following the last character of the reversed view. It corresponds to the character preceding the first character of the non-reversed view. This character acts as a placeholder, attempting to access it results in undefined behavior.

range-rbegin-rend.svg

Parameters

(none)

Return value

const_reverse_iterator to the character following the last character.

Complexity

Constant

Example

#include <algorithm>
#include <iostream>
#include <iterator>
#include <string_view>

int main()
{
    std::ostream_iterator<char> out_it(std::cout);
    std::string_view str_view("abcdef");

    std::copy(str_view.rbegin(), str_view.rend(), out_it);
    *out_it = '\n';

    std::copy(str_view.crbegin(), str_view.crend(), out_it);
    *out_it = '\n';
}

Output:

fedcba
fedcba

See also

returns a reverse iterator to the beginning
(public member function)