std::chrono::month_weekday::ok

 

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Calendar day (C++20) month (C++20) year (C++20) weekday (C++20) operator/ (C++20) year_month_day (C++20) year_month_day_last (C++20) year_month_weekday (C++20) year_month_weekday_last (C++20)   weekday_indexed (C++20) weekday_last (C++20) month_day (C++20) month_day_last (C++20) month_weekday (C++20) month_weekday_last (C++20) year_month (C++20) last_speclast (C++20)(C++20) chrono I/O parse (C++20)

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std::chrono::month_weekday

Member functions

month_weekday::month_weekday

month_weekday::monthmonth_weekday::weekday_indexed

month_weekday::ok

Nonmember functions

operator==

operator<<

Helper classes

formatter<std::chrono::month_weekday>

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

 

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

Checks if the contained month and weekday_indexed objects are valid.

Return value

month().ok() && weekday_indexed().ok()

Example

Run this code

#include <cassert>
#include <chrono>

int main()
{
    auto mwdi{std::chrono::March/std::chrono::Friday[1]};
    assert(mwdi.ok());

    mwdi = {std::chrono::month(17)/std::chrono::Friday[1]}; 
    assert(not mwdi.ok());

    mwdi = {std::chrono::March/std::chrono::Friday[-4]}; 
    assert(not mwdi.ok());
}