Miscellaneous functions for package checking, building, and CI

skip_example_on_ci and skip_example_on_runiverse check the environment for variables called "CI" and "MY_UNIVERSE", respectively, and return TRUE if it does not exist. Used to run examples if the package is being built locally and there's a chance that vdat.exe exists. If the package is being built on a continuous integration platform like GitHub Actions, the "CI" variable will be TRUE and skip_example_on_ci will return FALSE. If it is being built locally, "CI" will be "" and skip_example_on_ci will return TRUE. Similarly, if the package is being built on R-Universe, the "MY_UNIVERSE" variable will have your universe's name.

Usage

skip_example_on_ci()

skip_example_on_runiverse()

skip_example_on_cran()