assertthat: Easy Pre and Post Assertions

assertthat is 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 they've done wrong.

Install the latest version of this package by entering the following in R:
install.packages("assertthat")
AuthorHadley Wickham [aut, cre]
Date of publication2017-04-11 21:28:45 UTC
MaintainerHadley Wickham <hadley@rstudio.com>
LicenseGPL-3
Version0.2.0

View on CRAN

Questions? Problems? Suggestions? or email at ian@mutexlabs.com.

Please suggest features or report bugs with the GitHub issue tracker.

All documentation is copyright its authors; we didn't write any of that.