std::chrono::year_month_weekday_last::ok

 

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std::chrono::year_month_weekday_last

Member functions

year_month_weekday_last::year_month_weekday_last

year_month_weekday_last::operator+=year_month_weekday_last::operator-=

year_month_weekday_last::yearyear_month_weekday_last::monthyear_month_weekday_last::weekdayyear_month_weekday_last::weekday_last

year_month_weekday_last::operator sys_daysyear_month_weekday_last::operator local_days

year_month_weekday_last::ok

Nonmember functions

operator==

operator+operator-

operator<<

Helper classes

formatter<std::chrono::year_month_weekday_last>

hash<std::chrono::year_month_weekday_last> (C++26)

 

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());
}