std::inplace_vector<T,N>::rbegin, std::inplace_vector<T,N>::crbegin
From cppreference.com
< cpp | container | inplace vector
constexpr reverse_iterator rbegin() noexcept; |
(1) | (since C++26) |
constexpr const_reverse_iterator rbegin() const noexcept; |
(2) | (since C++26) |
constexpr const_reverse_iterator crbegin() const noexcept; |
(3) | (since C++26) |
Returns a reverse iterator to the first element of the reversed inplace_vector
. It corresponds to the last element of the non-reversed inplace_vector
. If the inplace_vector
is empty, the returned iterator is equal to rend().
Parameters
(none)
Return value
Reverse iterator to the first element.
Complexity
Constant.
Notes
The underlying iterator of the returned reverse iterator is the end iterator. Hence the returned iterator is invalidated if and when the end iterator is invalidated.
Example
Run this code
#include <algorithm> #include <inplace_vector> #include <iostream> #include <string> #include <string_view> void print(const std::string_view s) { std::cout << s << ' '; } int main() { const std::inplace_vector<std::string_view, 8> data { "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" }; std::inplace_vector<std::string, 8> arr(8); std::copy(data.cbegin(), data.cend(), arr.begin()); print("Print 'arr' in direct order using [cbegin, cend):\t"); std::for_each(arr.cbegin(), arr.cend(), print); print("\n\nPrint 'arr' in reverse order using [crbegin, crend):\t"); std::for_each(arr.crbegin(), arr.crend(), print); }
Output:
Print 'arr' in direct order using [cbegin, cend): ▁ ▂ ▃ ▄ ▅ ▆ ▇ █ Print 'arr' in reverse order using [crbegin, crend): █ ▇ ▆ ▅ ▄ ▃ ▂ ▁
See also
returns a reverse iterator to the end (public member function) | |
(C++14) |
returns a reverse iterator to the beginning of a container or array (function template) |