NAME¶

std::chrono::year_month_weekday::ok - std::chrono::year_month_weekday::ok

Synopsis¶

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

Checks if this year_month_weekday object represents a valid date.

Return value¶

true if this year_month_weekday object represents a valid date, that is, year().ok()
&& month().ok() && weekday_indexed().ok() is true and there are at least index()
weekday()s in the specified year and month. Otherwise false.

Example¶

// Run this code

#include <cassert>
#include <chrono>

int main()
{
auto ymwdi{std::chrono::Wednesday[1]/1/2021};
assert(ymwdi.ok());
ymwdi = std::chrono::year(2021)/std::chrono::month(1)/std::chrono::Wednesday[42];
assert(!ymwdi.ok());
}