cpp4r

1.1.0

Header-Only 'C++' and 'R' Interface

7packages depend

20.1Kdownloads / year

78.4%test coverage

13/13checks pass

Overview

About

Maintained by Mauricio Vargas SepulvedaFirst published 2025-10-167 releasesCRAN page ↗GitHub ↗

Provides a header only, 'C++' interface to 'R' with enhancements over 'cpp11'. Enforces copy-on-write semantics consistent with 'R' behavior. Offers native support for ALTREP objects, 'UTF-8' string handling, modern 'C++' features and idioms, and reduced memory requirements. Allows for vendoring, making it useful for restricted environments. Compared to 'cpp11', it adds support for converting 'C++' maps to 'R' lists, 'Roxygen' documentation directly in 'C++' code, proper handling of matrix attributes, support for nullable external pointers, bidirectional copy of complex number types, flexibility in type conversions, use of nullable pointers, and various performance optimizations.

Install

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

install.packages("cpp4r", 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("pachadotdev/cpp4r")

Development version from pachadotdev/cpp4r. 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-cpp4r

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-cpp4r

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-cpp4r

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

Health

CRAN checks

13OK

Slowest check: 1.4 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.00

78.4%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

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

Downloads

20.1K

CRAN downloads in the past year

Rank #1,959 · ~55/day · ~1.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

4.3K30 days

12K90 days

20.1K1 year

Compare downloads with other packages →

Also on521 r2u191 conda_forge

Repository

GitHub ↗ pachadotdev/cpp4r

7Stars

0Forks

0Open issues

0Open PRs

0Releases

38Commits

1Contributors

cpprstats

License Apache-2.0 · 38 commits · Last activity 2026-07-27 · 0% stars, 30d

Stars over time

2025-10-01 · 22026-07-07 · 7

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/pachadotdev/cpp4r on 2026-07-30.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

Makefile

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Governance and community (2)

Issue templatesSupport guide

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

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.0.0

Imports (0)

none

LinkingTo (0)

none

Suggests (2)

roxygen2 tinytest

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

7direct

20indirect

armadillo4r capybara economiccomplexity kendallknight leontief lotri redatam

Code & Tests

People & History

People (2)

Maintainer (1)

Mauricio Vargas Sepulveda

Author, Maintainer

Authors (2)

Mauricio Vargas Sepulveda

Author, Maintainer

Posit Software, PBC

Author

Package Timeline

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

1.1.0Latest
2026-07-21 · current release · diff ↗
1.0.0
2026-06-12 · diff ↗
0.6.0
2026-05-17 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.5.1
2026-04-15 · diff ↗
0.5.0
2026-04-13 · diff ↗
0.4.0
2025-12-04 · diff ↗
0.3.0
2025-10-16
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-10-16
Total releases: 7 / 1 yrs
License: Apache License (>= 2)
Minimum R: ≥ 4.0.0
Download size: 56 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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