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

constexpr const_reverse_iterator rend() const noexcept;

constexpr const_reverse_iterator crend() const noexcept;

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.

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';
}

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See also