constexpr bool empty() const; | (since C++20) |
Checks whether the subrange is empty, i.e. the stored iterator and sentinel compare equal.
(none).
true if the stored iterator and sentinel compare equal, false otherwise.
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(C++20) | obtains the size of the subrange (public member function) |
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(C++17) | checks whether the container is empty (function template) |
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(C++20) | checks whether a range is empty (customization point object) |
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