NAME¶

std::chrono::year_month_weekday_last::ok - std::chrono::year_month_weekday_last::ok

Synopsis¶

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()

Example¶

// Run this code

#include <cassert>
#include <chrono>
using namespace std::chrono;

int main()
{
auto ymwdl{Tuesday[last]/11/2020};
assert(ymwdl.ok());
ymwdl = Tuesday[last]/-2/2021;
assert(!ymwdl.ok());
ymwdl += months(0); // Normalize month
assert(ymwdl.ok());
}