std::basic_string_view::rbegin,(3)

NAME
std::basic_string_view::rbegin, - std::basic_string_view::rbegin,

Synopsis
   constexpr const_reverse_iterator rbegin() const noexcept; (since C++17)
   constexpr const_reverse_iterator crbegin() const noexcept; (since C++17)
   Returns a reverse iterator to the first character of the reversed view. It
   corresponds to the last character of the non-reversed view.
   range-rbegin-rend.svg

Parameters
   (none)

Return value
   const_reverse_iterator to the first character.

Complexity
   Constant.

Example
// Run this code
 #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(), std::next(str_view.rbegin(), 3), out_it);
     *out_it = '\n';
     std::copy(str_view.crbegin(), std::next(str_view.crbegin(), 3), out_it);
     *out_it = '\n';
 }

Output:
 fed
 fed

See also
   rend returns a reverse iterator to the end
   crend (public member function)
   rbegin returns a reverse iterator to the beginning
   crbegin (public member function of std::basic_string<CharT,Traits,Allocator>)
   (C++11)