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std::inplace_vector<T,N>::rbegin, std::inplace_vector<T,N>::crbegin

From cppreference.com
 
 
 
 
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().

range-rbegin-rend.svg

Contents

[edit] Parameters

(none)

[edit] Return value

Reverse iterator to the first element.

[edit] Complexity

Constant.

[edit] 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.

[edit] Example

#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):     █ ▇ ▆ ▅ ▄ ▃ ▂ ▁

[edit] See also

returns a reverse iterator to the end
(public member function) [edit]
returns a reverse iterator to the beginning of a container or array
(function template) [edit]