std::basic_string<CharT,Traits,Allocator>::rbegin, std::basic_string<CharT,Traits,Allocator>::crbegin
来自cppreference.com
< cpp | string | basic string
| (1) | ||
| reverse_iterator rbegin(); |
(C++11 前) | |
| reverse_iterator rbegin() noexcept; |
(C++11 起) (C++20 前) |
|
| constexpr reverse_iterator rbegin() noexcept; |
(C++20 起) | |
| (2) | ||
| const_reverse_iterator rbegin() const; |
(C++11 前) | |
| const_reverse_iterator rbegin() const noexcept; |
(C++11 起) (C++20 前) |
|
| constexpr const_reverse_iterator rbegin() const noexcept; |
(C++20 起) | |
| (3) | ||
| const_reverse_iterator crbegin() const noexcept; |
(C++11 起) (C++20 前) |
|
| constexpr const_reverse_iterator crbegin() const noexcept; |
(C++20 起) | |
返回指向逆转字符串首字符的逆向迭代器。它对应非逆向字符串的末字符。
参数
（无）
返回值
指向首字符的逆向迭代器
复杂度
常数
示例
运行此代码
#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" }
输出：
Exemplary yralpmexE
参阅
| (C++11) |
返回指向末尾的逆向迭代器 (公开成员函数) |
