std::basic_string<CharT,Traits,Allocator>::rbegin, std::basic_string<CharT,Traits,Allocator>::crbegin
(1) | ||
reverse_iterator rbegin(); |
(until C++11) | |
reverse_iterator rbegin() noexcept; |
(since C++11) (until C++20) |
|
constexpr reverse_iterator rbegin() noexcept; |
(since C++20) | |
(2) | ||
const_reverse_iterator rbegin() const; |
(until C++11) | |
const_reverse_iterator rbegin() const noexcept; |
(since C++11) (until C++20) |
|
constexpr const_reverse_iterator rbegin() const noexcept; |
(since C++20) | |
(3) | ||
const_reverse_iterator crbegin() const noexcept; |
(since C++11) (until C++20) |
|
constexpr const_reverse_iterator crbegin() const noexcept; |
(since 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.
Parameters
(none).
Return value
reverse iterator to the first character.
Complexity
Constant.
Example
#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
(C++11)
|
returns a reverse iterator to the end (public member function) |
(C++17)
|
returns a reverse iterator to the beginning (public member function of std::basic_string_view<CharT,Traits> ) |
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