std::chrono::year::ok

From cppreference.com
< cpplrm; | chronolrm; | year
Date and time utilities
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(C++20)
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Calendars
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Time zones
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C-style date and time
constexpr bool ok() const noexcept;
(since C++20)

Checks if the year value stored in *this is in the valid range, i.e., [-32767, 32767].

Return value

true if the year value stored in *this is in the range [-32767, 32767]. Otherwise false.