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std::basic_string_view::rend,std::basic_string_view::crend(3) C++ Standard Libary std::basic_string_view::rend,std::basic_string_view::crend(3)

NAME

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

Synopsis


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

// 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(), 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


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

2024.06.10 http://cppreference.com