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std::chrono::year_month_weekday_last::ok

constexpr bool ok() const noexcept;
(since C++20)

Checks if this object represents a valid date. Since a year_month_weekday_last represents the last weekday of a particular month, it is valid as long as the year, month and weekday are valid.

Return value

year().ok() && month().ok() && weekday().ok().

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