std::inplace_vector<T,N>:: rbegin, std::inplace_vector<T,N>:: crbegin
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constexpr
reverse_iterator rbegin
(
)
noexcept
;
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(1) | (since C++26) |
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constexpr
const_reverse_iterator rbegin
(
)
const
noexcept
;
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(2) | (since C++26) |
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constexpr
const_reverse_iterator crbegin
(
)
const
noexcept
;
|
(3) | (since C++26) |
Returns a reverse iterator to the first element of the reversed * this . It corresponds to the last element of the non-reversed * this .
If * this is empty, the returned iterator is equal to rend() .
Contents |
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
#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
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returns a reverse iterator to the end
(public member function) |
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(C++14)
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returns a reverse iterator to the beginning of a container or array
(function template) |