Fast Utilities for Year Month Day Objects

A collection of utility functions for working with Year Month Day objects. Includes functions for fast parsing of numeric and character input based on algorithms described in Hinnant, H. (2021) < https://howardhinnant.github.io/date_algorithms.html> as well as a branchless calculation of leap years by Jerichaux (2025) < https://stackoverflow.com/a/79564914>.

You can install the latest release of fastymd from CRAN with:

install.packages("fastymd")

A brief overview of fastymd is available online and in the vignette distributed with the package:

vignette("fastymd", package = "fastymd")