interfacer

0.4.0

Define and Enforce Contracts for Dataframes as Function Parameters

0packages depend

2.9Kdownloads / year

38.4%test coverage

13/13checks pass

Overview

About

Maintained by Robert ChallenFirst published 2024-08-014 releasesCRAN page ↗GitHub ↗

A dataframe validation framework for package builders who use dataframes as function parameters. It performs checks on column names, coerces data-types, and checks grouping to make sure user inputs conform to a specification provided by the package author. It provides a mechanism for package authors to automatically document supported dataframe inputs and selectively dispatch to functions depending on the format of a dataframe much like S3 does for classes. It also contains some developer tools to make working with and documenting dataframe specifications easier. It helps package developers to improve their documentation and simplifies parameter validation where dataframes are used as function parameters.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("interfacer", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ai4ci/interfacer")

Development version from ai4ci/interfacer. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-interfacer

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-interfacer

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-interfacer

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 3.1 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.15

38.4%

Coverage · measured lines

98%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-08
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-06-07
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 257 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 98%
Return-value docs: 100%
References docs: 0%

Downloads

2.9K

CRAN downloads in the past year

Rank #19,560 · ~8/day · ~240/mo

Releases R versions

Daily download trend is not available in this view yet.

19830 days

58290 days

2.9K1 year

Compare downloads with other packages →

Also on113 r2u33 autocran

Repository

GitHub ↗ ai4ci/interfacer

2Stars

0Forks

3Open issues

0Open PRs

6Releases

68Commits

1Contributors

68 commits · Last activity 2026-03-03

Stars over time

2025-02-19 · 22026-07-07 · 2

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/ai4ci/interfacer on 2026-07-30.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

25 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.10

Imports (13)

dplyr glue magrittr purrr rlang tibble tidyselect stringr forcats knitr lobstr roxygen2 lifecycle

LinkingTo (0)

none

Suggests (12)

rmarkdown devtools ggplot2 testthat fs readr usethis whisker clipr tidyr binom spelling

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (1)

Maintainer (1)

Robert Challen

Author, Maintainer, Copyright holder

Authors (1)

Robert Challen

Author, Maintainer, Copyright holder

Robert Challen

Author, Maintainer, Copyright holder

Package Timeline

4 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.4.0Latest
2025-12-15 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
0.3.3
2025-02-03 · diff ↗
0.3.2
2024-11-14 · diff ↗
0.2.3
2024-08-01
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-08-01
Total releases: 4 / 2 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 2.10
Download size: 143 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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