Easy Pre and Post Assertions R package assertthat version 0.2.1 An extension to stopifnot() that makes it easy to declare the pre and post conditions that you code should satisfy, while also producing friendly error messages so that your users know what's gone wrong. Software Imports: tools Suggests: testthat, covr Hadley Wickham <hadley@rstudio.com> Comprehensive R Archive Network (CRAN) Hadley Wickham [aut, cre] GPL-3 2019-03-21 application/tgz https://CRAN.R-project.org/package=assertthat doi:10.32614/CRAN.package.assertthat