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schmear: Build Structured Data Frame Subtypes

Provides developer-focused helper functions and S3 classes to ease the creation of structured subtypes of data frames. Developers can require certain columns and types to be present, and can enforce crossing and nesting relationships between values in different columns. Type-specific metadata and attributes are preserved through common data frame manipulations.

Version: 0.1.0
Imports: rlang, cli, vctrs
Suggests: dplyr, pillar, testthat (≥ 3.0.0)
Published: 2026-05-29
DOI: 10.32614/CRAN.package.schmear
Author: Cory McCartan ORCID iD [aut, cre, cph]
Maintainer: Cory McCartan <mccartan at psu.edu>
BugReports: https://github.com/CoryMcCartan/schmear/issues
License: MIT + file LICENSE
URL: https://corymccartan.com/schmear/, https://github.com/CoryMcCartan/schmear
NeedsCompilation: no
Materials: README, NEWS
CRAN checks: schmear results

Documentation:

Reference manual: schmear.html , schmear.pdf

Downloads:

Package source: schmear_0.1.0.tar.gz
Windows binaries: r-devel: schmear_0.1.0.zip, r-release: schmear_0.1.0.zip, r-oldrel: schmear_0.1.0.zip
macOS binaries: r-release (arm64): schmear_0.1.0.tgz, r-oldrel (arm64): schmear_0.1.0.tgz, r-release (x86_64): schmear_0.1.0.tgz, r-oldrel (x86_64): schmear_0.1.0.tgz

Linking:

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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.