std::chrono::year_month_weekday_last::ok
From cppreference.com
< cpp | chrono | year month weekday last
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()