std::basic_string<CharT,Traits,Allocator>::rend,std::basic_string<CharT,Traits,Allocator>::crend
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<cpp |string |basic string
C++
std::basic_string
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reverse_iterator rend(); | (1) | (noexcept since C++11) (constexpr since C++20) |
const_reverse_iterator rend()const; | (2) | (noexcept since C++11) (constexpr since C++20) |
const_reverse_iterator crend()constnoexcept; | (3) | (since C++11) (constexpr since C++20) |
Returns a reverse iterator to the character following the last character of the reversed string. It corresponds to the character preceding the first character of the non-reversed string. This character acts as a placeholder, attempting to access it results in undefined behavior.
Contents |
[edit]Parameters
(none)
[edit]Return value
Reverse iterator to the character following the last character.
[edit]Complexity
Constant.
[edit]Notes
libc++ backportscrend() to C++98 mode.
[edit]Example
Run this code
#include <algorithm>#include <iostream>#include <iterator>#include <string> int main(){std::string p("[A man, a plan, a canal: Panama]");std::string q; std::copy(p.crbegin(), p.crend(),std::back_inserter(q));std::cout<<"q = "<< q<<'\n'; std::copy(q.crbegin(), q.crend(), p.rbegin());std::cout<<"p = "<< p<<'\n';}
Output:
q = ]amanaP :lanac a ,nalp a ,nam A[p = ]amanaP :lanac a ,nalp a ,nam A[
[edit]See also
(C++11) | returns a reverse iterator to the beginning (public member function)[edit] |
| returns a reverse iterator to the end (public member function of std::basic_string_view<CharT,Traits>)[edit] |
