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std::basic_string::rbegin,(3) | C++ Standard Libary | std::basic_string::rbegin,(3) |
NAME¶
std::basic_string::rbegin, - std::basic_string::rbegin,
Synopsis¶
reverse_iterator rbegin(); (until C++11)
reverse_iterator rbegin() noexcept; (since C++11)
(until C++20)
constexpr reverse_iterator rbegin() noexcept; (since C++20)
const_reverse_iterator rbegin() const; (until
C++11)
(since
const_reverse_iterator rbegin() const C++11)
noexcept; (1) (until
C++20)
constexpr const_reverse_iterator rbegin() (2) (since
const noexcept; C++20)
(since
const_reverse_iterator crbegin() const C++11)
noexcept; (3) (until
C++20)
constexpr const_reverse_iterator crbegin() (since
const noexcept; C++20)
Returns a reverse iterator to the first character of the reversed string. It
corresponds to the last character of the non-reversed string.
range-rbegin-rend.svg
Parameters¶
(none)
Return value¶
reverse iterator to the first character
Complexity¶
Constant
Example¶
// Run this code
#include <iostream>
#include <algorithm>
#include <iterator>
#include <string>
int main()
{
std::string s("Exemplar!");
*s.rbegin() = 'y';
std::cout << s << '\n'; // "Exemplary"
std::string c;
std::copy(s.crbegin(), s.crend(), std::back_inserter(c));
std::cout << c << '\n'; // "yralpmexE"
}
Output:¶
Exemplary
yralpmexE
See also¶
rend returns a reverse iterator to the end
crend (public member function)
(C++11)
rbegin returns a reverse iterator to the beginning
crbegin (public member function of
std::basic_string_view<CharT,Traits>)
(C++17)
2022.07.31 | http://cppreference.com |