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.

Version: 0.1
Suggests: testthat
Published: 2013-12-06
Author: 'Hadley Wickham' [aut, cre]
Maintainer: 'Hadley Wickham' <h.wickham at>
License: GPL-3
NeedsCompilation: no
Materials: README
CRAN checks: assertthat results


Reference manual: assertthat.pdf
Package source: assertthat_0.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: assertthat_0.1.tgz, r-oldrel: assertthat_0.1.tgz
OS X Mavericks binaries: r-release: assertthat_0.1.tgz

Reverse dependencies:

Reverse imports: aemo, AntWeb, bigrquery, bnclassify, bold, boxr, broman, coala, codyn, dataonderivatives, dplyr, ecoengine, FastKNN, ggvis, gistr, listWithDefaults, luzlogr, managelocalrepo, neuroim, prettyunits, rchess, RDML, rdrop2, reutils, rfisheries, rjstat, rprime, simcausal, solr, spareserver, textreuse, tidyjson, tmlenet, USAboundaries, wordbankr