NAME

std::span::rbegin - std::span::rbegin

Synopsis

constexpr reverse_iterator rbegin() const noexcept;

Returns a reverse iterator to the first element of the reversed span. It corresponds
to the last element of the non-reversed span. If the span is empty, the returned
iterator is equal to rend().

range-rbegin-rend.svg

Parameters

(none)

Return value

Reverse iterator to the first element.

Complexity

Constant.

Example

// Run this code

#include <algorithm>
#include <iostream>
#include <iterator>
#include <span>

int main()
{
constexpr std::span<const char> code{ "@droNE_T0P_w$s@s#_SECRET_a,p^42!" };

auto hacker = [](const unsigned O) { return O-0141<120; };

std::copy_if(code.rbegin(), code.rend(),
std::ostream_iterator<const char>(std::cout), hacker);
}

Output:

password

See also

rend returns a reverse iterator to the end
(C++20) (public member function)
rbegin returns a reverse iterator to the beginning of a container or array
crbegin (function template)
(C++14)