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checkstring: Common String Format Validation

Validates common string formats including financial identifiers (ISIN, CUSIP, SEDOL, FIGI, IBAN, LEI), publication identifiers (ISBN, ISSN, DOI, ORCID), and general formats (email, UUID, URL, semver), with check digit verification where applicable.

Version: 0.1.0
Depends: R (≥ 4.1.0)
Suggests: curl, testthat (≥ 3.0.0)
Published: 2026-03-05
DOI: 10.32614/CRAN.package.checkstring
Author: Maximilian Mücke ORCID iD [aut, cre]
Maintainer: Maximilian Mücke <muecke.maximilian at gmail.com>
BugReports: https://github.com/m-muecke/checkstring/issues
License: MIT + file LICENSE
URL: https://m-muecke.github.io/checkstring/, https://github.com/m-muecke/checkstring
NeedsCompilation: no
Materials: README, NEWS
CRAN checks: checkstring results

Documentation:

Reference manual: checkstring.html , checkstring.pdf

Downloads:

Package source: checkstring_0.1.0.tar.gz
Windows binaries: r-devel: checkstring_0.1.0.zip, r-release: checkstring_0.1.0.zip, r-oldrel: checkstring_0.1.0.zip
macOS binaries: r-release (arm64): checkstring_0.1.0.tgz, r-oldrel (arm64): checkstring_0.1.0.tgz, r-release (x86_64): checkstring_0.1.0.tgz, r-oldrel (x86_64): checkstring_0.1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=checkstring to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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