# std::chrono::weekday_indexed::weekday_indexed

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< cpp‎ | chrono‎ | 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

Run this code

    #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

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

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