holiday

A rust library for defining and iterating over annually repeating dates and holidays.

Create a new Holiday

A Holiday can be either a fixed date like 'April 2nd' or an nth weekday of a month, like '1st Friday in April'.

```rust use holiday::*; use chrono::{Weekday, NaiveDate};

// Regular fixed holiday let holiday = Holiday::newfixed("April 2nd", April, 2); asserteq!(holiday.inyear(2021), NaiveDate::fromymd(2021, 4, 2)); asserteq!(holiday, NaiveDate::fromymd(2021, 4, 2)); asserteq!(holiday, NaiveDate::fromymd(2022, 4, 2));

// Pastover: First Friday in April, an nth holiday let pastover = Holiday::newnth("Pastover", First, Weekday::Fri, April); asserteq!(pastover.inyear(2021), NaiveDate::fromymd(2021, 4, 2)); asserteq!(pastover, NaiveDate::fromymd(2021, 4, 2)); asserteq!(pastover, NaiveDate::fromymd(2022, 4, 1)); ```

Iterate over the occurrences of a Holiday.

The HolidayIter type is an iterator over the occurrences of a Holiday.