R Observatory: Metrics for cppally version 1.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

cppally

1.1.0Package record

A 'C++20' API for R

0packages depend

1.5Kdownloads / year

–test coverage

10/13flavors OK

Overview

About

Maintained by Nick ChristofidesCRAN page ↗GitHub ↗Website ↗Issues ↗

A header-only 'C++20' API for manipulating R data structures from 'C++'. Provides 'C++20' concepts specific to R, custom scalar and vector classes with built-in NA handling, automatic object protection, 'SIMD' (single-instruction-multiple-data), parallelisation, and a streamlined system for registering 'C++' functions, including templates, to R. Full API reference and documentation are available at https://nicchr.github.io/cppally/.

Changes in 1.1.0

Breaking changes

Improved type-safety regarding implicit coercion of RScalar types. They now

can implicitly coerce **only** to their wrapped types, whereas before they

could implicitly coerce to that as well as other C types.

RTimeType arithmetic has been deprecated and removed.
Arithmetic involving r_lgl is now always promoted to r_int, matching R's

own semantics.

common_math_t<T, U> now never returns r_lgl, effectively treating r_lgl

as r_int.

Bug fixes

Fixed bug where exclusion of concepts header was affecting vignette creation on macos.
Fixed incorrect NA handling of r_date and r_psxct.

Show all changes in 1.1.0Hide the rest of the changes in 1.1.0

Fixed a bug where identical() would return false for two genuinely

identical NA_real_ values.

NULL optional arguments are now correctly handled.

Vector, factor and data frame arguments can now be NULL to allow for optional

argument programming from R.

Fixed a bug where checking exact equality (via identical) for C/C++ types

was not compiling due to template ordering issue.

r_lgl (logical) semantics

r_lgl can now implicitly coerce to int (and only int), consistent with

the other RScalar types.

r_lgl values are now always normalised on construction internally to either

0, 1, or NA.

Arithmetic

Integer overflow is now explicitly handled in all cppally arithmetic, returning

NA when detected. Integer addition and subtraction in particular are

written using branchless or vectorisable code, enabling SIMD vectorisation.

Integer in-place division /= now matches R's %/%

(floored division), instead of C's truncating division, e.g. -7L /= 2L now

gives -4 instead of -3. Division by zero or NA now correctly returns

NA instead of crashing the R session. Precision is also preserved for large

r_int64 values that previously round-tripped through double.

Scalar in-place arithmetic that narrows a wider result back to the left-hand

type (e.g. r_int += r_int64) now checks the value fits first,

giving NA on overflow instead of a silently wrapped result.

% now accepts mixed integer/float operands (e.g. r_int(7) % 2.5),

promoting and flooring consistent with R's %%.

Vector in-place arithmetic (+=, -=, *=, %=) now routes through the

scalar operators, fixing a bug where mixed-width operations (e.g.

r_vec<r_int> += r_vec<r_int64>) could silently truncate values, including

turning NA into 0.

Improvements

Better errors when passing invalid types to template functions.
Constructing invalid dates and date-times now returns NA instead of

an error.

New concept RNumber to represent number-based types like r_int and r_dbl.
New member is_na for RScalar types, in addition to the equivalent

is_na free function.

New member function na() for RScalar classes.
Relational operators have been extended to cover all RNumericType classes

which includes r_date and r_psxct.

From NEWS.md in the release

Install

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

install.packages("cppally", 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("NicChr/cppally")

Development version from NicChr/cppally. 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-cppally

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-cppally

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-cppally

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

3ERROR10OK

Check messages

ERRORre-building of vignette outputsr-oldrel-macos-arm64, r-oldrel-macos-x86_64, r-release-macos-x86_64

r-oldrel-macos-arm64

Error(s) in re-building vignettes:
--- re-building ‘cppally.Rmd’ using rmarkdown

Quitting from cppally.Rmd:85-467 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Compilation failed:
using C++ compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using C++20
using SDK: ‘MacOSX11.3.1.sdk’
In file included from /Volumes/Temp/tmp/RtmpdHyCPu/fileca4910c8f907/src/cppally.cpp:1:
In file included from /Volumes/Builds/packages/big-sur-arm64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_dispatch.h:13:
In file included from /Volumes/Builds/packages/big-sur-arm64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_sexp_types.h:8:
/Volumes/Builds/packages/big-sur-arm64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_concepts.h:292:25: error: no member named 'cmp_less_equal' in namespace 'std'
            return std::cmp_less_equal(
                   ~~~~~^
/Volumes/Builds/packages/big-sur-arm64/re
...[truncated]...
heck/cppally/include/cppally/r_types.h:6:
In file included from /Volumes/Builds/packages/big-sur-arm64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_lgl.h:7:
/Volumes/Builds/packages/big-sur-arm64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_int.h:15:15: error: substitution into constraint expression resulted in a non-constant expression
    requires (internal::lossless_numeric_cast<T, int>())
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Volumes/Builds/packages/big-sur-arm64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_lgl.h:20:52: note: while checking constraint satisfaction for template 'r_int<int>' required here
  explicit constexpr r_lgl(int x) noexcept : value(r_int(x).is_na() ? x : static_cast<int>(static_cast<bool>(x)
--- failed re-building ‘vector_name_hashing.Rmd’

SUMMARY: processing the following files failed:
  ‘cppally.Rmd’ ‘functionals.Rmd’ ‘protection.Rmd’
  ‘vector_name_hashing.Rmd’

Error: Vignette re-building failed.
Execution halted

r-oldrel-macos-x86_64

Error(s) in re-building vignettes:
--- re-building ‘cppally.Rmd’ using rmarkdown

Quitting from cppally.Rmd:85-467 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Compilation failed:
using C++ compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using C++20
using SDK: ‘MacOSX11.3.1.sdk’
In file included from /Volumes/Temp/tmp/Rtmpv2urhj/fileb53c248346f2/src/cppally.cpp:1:
In file included from /Volumes/Builds/packages/big-sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_dispatch.h:13:
In file included from /Volumes/Builds/packages/big-sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_sexp_types.h:8:
/Volumes/Builds/packages/big-sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_concepts.h:292:25: error: no member named 'cmp_less_equal' in namespace 'std'
            return std::cmp_less_equal(
                   ~~~~~^
/Volumes/Builds/packages/big-sur-x86_6
...[truncated]...
sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_types.h:6:
In file included from /Volumes/Builds/packages/big-sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_lgl.h:7:
/Volumes/Builds/packages/big-sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_int.h:15:15: error: substitution into constraint expression resulted in a non-constant expression
    requires (internal::lossless_numeric_cast<T, int>())
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Volumes/Builds/packages/big-sur-x86_64/results/4.5/cppally.Rcheck/cppally/include/cppally/r_lgl.h:20:52: note: while checking constraint satisfaction for template 'r_int<int>' required here
  explicit constexpr r_lgl(int x) noexcept : value(r_int(x).is_na() ? x : s
--- failed re-building ‘vector_name_hashing.Rmd’

SUMMARY: processing the following files failed:
  ‘cppally.Rmd’ ‘functionals.Rmd’ ‘protection.Rmd’
  ‘vector_name_hashing.Rmd’

Error: Vignette re-building failed.
Execution halted

r-release-macos-x86_64

Error(s) in re-building vignettes:
--- re-building ‘cppally.Rmd’ using rmarkdown

Quitting from cppally.Rmd:85-467 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Compilation failed:
specified C++20
using C++ compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using C++20
using SDK: ‘MacOSX11.3.1.sdk’
In file included from /Volumes/Temp/tmp/RtmpeIzaBU/file14e90705c29bc/src/cppally.cpp:1:
In file included from /Volumes/Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_dispatch.h:13:
In file included from /Volumes/Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_sexp_types.h:8:
/Volumes/Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_concepts.h:292:25: error: no member named 'cmp_less_equal' in namespace 'std'
            return std::cmp_less_equal(
                   ~~~~~^
/Volumes/Builds/packa
...[truncated]...
Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_types.h:6:
In file included from /Volumes/Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_lgl.h:7:
/Volumes/Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_int.h:15:15: error: substitution into constraint expression resulted in a non-constant expression
    requires (internal::lossless_numeric_cast<T, int>())
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Volumes/Builds/packages/big-sur-x86_64/results/4.6/cppally.Rcheck/cppally/include/cppally/r_lgl.h:20:52: note: while checking constraint satisfaction for template 'r_int<int>' required here
  explicit constexpr r_lgl(int x) noexcept : value(r_in
--- failed re-building ‘vector_name_hashing.Rmd’

SUMMARY: processing the following files failed:
  ‘cppally.Rmd’ ‘functionals.Rmd’ ‘protection.Rmd’
  ‘vector_name_hashing.Rmd’

Error: Vignette re-building failed.
Execution halted

CRAN check page ↗

Slowest check: 6.9 min · r-oldrel-windows-x86_64

Status changes

ERROR10 OK, 3 ERRORNow
ERROR4 OK, 1 ERROR2026-04-29

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.0

READMEYes · 1,409 wordsVignettesYes · 4 · dynamicNEWSYes · 100% structured · mentions 1.1.0Citation fileNoWebsiteYes · pkgdown

The repository also keeps web-only articles.

Help pages: 10 (1 internal)includes a package overview page
Examples that run: 100%1 run in a plain check
Exported functions with examples: 11%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (4)

How these are measured

Downloads

1.5K

CRAN downloads in the past year

Rank #24,330 · ~4/day · ~127/mo

Releases R versions

Daily download trend is not available in this view yet.

14830 days

50190 days

1.5K1 year

Compare downloads with other packages →

Also on43 r2u16 autocran

How downloads are counted

Repository

nicchr/cppally ↗Account: NicChr

2Stars

0Forks

4Open issues

0Open PRs

3Releases

2,236Commits

1Commit identities

2,236 commits · Last activity 2026-10-23 · 0% stars, 30d · Default branch at 1.1.0.9000, ahead of CRAN 1.1.0 (checked 2026-10-21)

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 1
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2026-04-12 · 12026-07-07 · 2

How these are measured

PracticesBeta

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

Checks run against github.com/nicchr/cppally on 2026-10-21.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-10-20 · The repository has a site deploy workflow

pkgdown site last built 2026-10-20

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

23 external dependencies (excludes base and recommended)

Installing cppally adds no packages beyond those that come with R.

Depends (1)

R >= 4.5.0

Imports (0)

none

LinkingTo (0)

none

Suggests (23)

bench bit64 brio callr cli cpp11 decor desc devtools fs glue knitr pkgload purrr readr rmarkdown roxygen2 rstudioapi stringr testthat usethis vctrs withr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (4)

Nick Christofides

Malte Skarupke

Copyright holder

Author of bundled ska_sort library

Martin Leitner-Ankerl

Copyright holder

Author of bundled ankerl::unordered_dense library

Posit Software, PBC

Copyright holder

SEXP protection mechanism in r_protect.h inspired by cpp11

Releases (3)

Pick two releases to compare their code metrics.

1.1.0Latest
record
2026-07-12 · current release · diff ↗
1.0.0
record
2026-04-28 · diff ↗ ·
added 3 exports
use_check_data_frames, use_check_factors, use_copy_on_modify
0.1.0
record
2026-04-28
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-04-28
Total releases: 3 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.5.0
Download size: 266 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("cppally")

Format

Christofides, N., Malte Skarupke, Martin Leitner-Ankerl, & Posit Software, PBC. (2026). cppally: A 'C++20' API for R (Version 1.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.cppally

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for cppally version 1.1.0 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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