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: 0.2.0
Imports: tools
Suggests: testthat
Published: 2017-04-11
Author: Hadley Wickham [aut, cre]
Maintainer: Hadley Wickham <hadley at>
License: GPL-3
NeedsCompilation: no
Materials: README
CRAN checks: assertthat results


Reference manual: assertthat.pdf
Package source: assertthat_0.2.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X El Capitan binaries: r-release: assertthat_0.2.0.tgz
OS X Mavericks binaries: r-oldrel: assertthat_0.2.0.tgz
Old sources: assertthat archive

Reverse dependencies:

Reverse depends: condusco, sourceR
Reverse imports: aemo, afmToolkit, ALA4R, AntWeb, ashr, auk, awsjavasdk, bigQueryR, bigrquery, binman, biofiles, Bioi, bnclassify, boxr, breathtestcore, broman, CAISEr, callr, CausalImpact, citr, cli, coala, codyn, dataonderivatives, dbplyr, desc, dgo, diceR, dplyr, easypackages, ecoengine, ExpDE, FastKNN, fastrtext, fbar, fiery, fileplyr, fmbasics, fmdates, fuzzr, gastempt, GerminaR, ggloop, ggraptR, ggthemes, ggvis, gistr, googleAnalyticsR, googleAuthR, googleCloudStorageR, googleComputeEngineR, googleLanguageR, grattan, HARtools, heatmaply, highcharter, huxtable, imaginator, implyr, jaatha, keyring, lime, listWithDefaults, liteq, luzlogr, managelocalrepo, mcglm, MOEADr, NetworkInference, neuroim, nima, paramlink, prcbench, precrec, prettyunits, prioritizr, processx, projector, proustr, pushoverr, qualpalr, qualtRics, raptr, ratelimitr, RBesT, rchess, RCMIP5, remindR, reqres, reutils, rfisheries, rhub, rmapzen, rotl, routr, rpcdsearch, rprime, RSQLServer, saeRobust, safer, secret, semver, simcausal, slimrec, solr, spareserver, sparklyr, sss, stranger, stremr, tatoo, testthis, TexExamRandomizer, textreuse, thinkr, tibbletime, tmlenet, togglr, upwaver, wdman, XKCDdata, ztype
Reverse suggests: MonetDBLite, reproducer, themetagenomics


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