std::chrono::month_weekday::month, std::chrono::month_weekday::weekday_indexed

constexpr std::chrono::month month() const noexcept;	(1)	(since C++20)
constexpr std::chrono::weekday_indexed weekday_indexed() const noexcept;	(2)	(since C++20)

Возвращает копию объектов month и weekday_indexed, хранящихся в *this.

Возвращаемое значение

1) Копия объекта std::chrono::month, хранящегося в *this.

2) Копия объекта std::chrono::weekday_indexed, хранящегося в *this.

Пример

#include <chrono>
#include <iostream>
 
int main()
{
    std::cout << std::boolalpha;
 
    auto mwdi{std::chrono::March/std::chrono::Friday[1]}; // 1st Friday in a March
    std::cout << (std::chrono::year_month_day{mwdi/2024} == 
                  std::chrono::year_month_day{std::chrono::March/1/2024})
                  << ' ';
    auto index = mwdi.weekday_indexed().index();
    auto weekday = mwdi.weekday_indexed().weekday();
    mwdi = {mwdi.month(), weekday[index + 4]}; // 5th Friday in a March
    std::cout << (std::chrono::year_month_day{mwdi/2024} == 
                  std::chrono::year_month_day{std::chrono::March/29/2024})
                  << '\n';
}

Вывод:

true true

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