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std::basic_string<CharT,Traits,Allocator>::rbegin, std::basic_string<CharT,Traits,Allocator>::crbegin

From cppreference.com
< cpp‎ | string‎ | basic string
 
 
 
std::basic_string
 
(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.

range-rbegin-rend.svg

Contents

[edit] Parameters

(none)

[edit] Return value

reverse iterator to the first character

[edit] Complexity

Constant

[edit] 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

[edit] See also

returns a reverse iterator to the end
(public member function) [edit]