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

From cppreference.net
C++
Date and time library
std::chrono::month_weekday
Member functions
month_weekday::month month_weekday::weekday_indexed
Nonmember functions
Helper classes
(C++26)
constexpr std:: chrono :: month month ( ) const noexcept ;
(1) (seit C++20)
constexpr std:: chrono :: weekday_indexed weekday_indexed ( ) const noexcept ;
(2) (seit C++20)

Ruft eine Kopie der month und weekday_indexed Objekte ab, die in * this gespeichert sind.

Rückgabewert

1) Eine Kopie des in std::chrono::month gespeicherten Objekts * this .
2) Eine Kopie des in std::chrono::weekday_indexed gespeicherten Objekts * this .

Beispiel

Diesen Code ausführen 
#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';
}

Ausgabe: 

true true