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std::chrono::weekday_indexed::weekday_indexed

weekday_indexed() = default;
(since C++20)
constexpr weekday_indexed(const std::chrono::weekday& wd, unsigned index) noexcept;
(since C++20)

Constructs a weekday_indexed.

1) Default constructor leaves both the std::chrono::weekday and the index value uninitialized.
2) Constructs a weekday_indexed storing the weekday wd and the index index. The values held are unspecified if !wd.ok() || index == 0 || index > 5.

Notes

A more convenient way to construct a weekday_indexed is with weekday's operator[], i.e., wd[index].

Example

#include <chrono>
#include <iostream>
using namespace std::chrono;
 
int main() {
  auto wdi = Tuesday[2]; // wdi is weekday_indexed representing the 2nd tuesday
  std::cout << year_month_day{ wdi / October / 2019y } ;
}

Output:

2019-10-08

See also

convenience syntax for constructing a weekday_indexed or weekday_last from this weekday
(public member function of std::chrono::weekday)

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