Fast and Versatile Argument Checks R package checkmate version 2.3.4 Tests and assertions to perform frequent argument checks. A substantial part of the package was written in C to minimize any worries about execution time overhead. Software Depends: R (>= 3.0.0) Imports: backports (>= 1.1.0), utils Suggests: R6, fastmatch, data.table (>= 1.9.8), devtools, ggplot2, knitr, magrittr, microbenchmark, rmarkdown, testthat (>= 3.0.4), tinytest (>= 1.1.0), tibble Michel Lang <michellang@gmail.com> Comprehensive R Archive Network (CRAN) Michel Lang [cre, aut] (ORCID: <https://orcid.org/0000-0001-9754-0393>), Bernd Bischl [ctb], Dénes Tóth [ctb] (ORCID: <https://orcid.org/0000-0003-4262-3217>) BSD_3_clause + file LICENSE (https://CRAN.R-project.org/package=checkmate/LICENSE) 2026-02-03 application/tgz https://CRAN.R-project.org/package=checkmate doi:10.32614/CRAN.package.checkmate