R Observatory: Metrics for deflist version 0.2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

deflist

0.2.0Package record

Deferred List - A Read-Only List-Like Object with Deferred Access

1packages depend

7Kdownloads / year

80.9%test coverage

13/13flavors OK

Overview

About

Maintained by Bradley BuchsbaumCRAN page ↗Website ↗

Implements the 'deflist' class, a read-only list-like object that accesses its elements via a function. The 'deflist' class can be used to model deferred access to data or computations by routing indexed list access to a function. This approach is particularly useful when sequential list-like access to data is required but holding all the data in memory at once is not feasible. The package also provides utilities for memoisation and caching to optimize access to frequently requested elements.

Install

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

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

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

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-deflist

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-deflist

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-deflist

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

13OK

CRAN check page ↗

Slowest check: 1.1 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
WARNING12 OK, 1 WARNING2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.2.0

READMEYes · 124 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 0.2.0Citation fileNoWebsiteYes · pkgdown

Help pages: 7
Examples that run: 100%2 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (1)

Introduction to deflist HTML

How these are measured

Downloads

7K

CRAN downloads in the past year

Rank #4,274 · ~19/day · ~587/mo

Releases R versions

Daily download trend is not available in this view yet.

73230 days

2K90 days

7K1 year

Compare downloads with other packages →

Also on86 r2u5 autocran

How downloads are counted

Repository

bbuchsbaum/deflist ↗Account: bbuchsbaum

1Stars

0Forks

1Open issues

1Open PRs

0Releases

28Commits

2Commit identities

rr-package

License file reads as LGPL-2.1 · 28 commits · Last activity 2026-03-29 · Default branch at 0.2.2, ahead of CRAN 0.2.0 (checked 2026-10-18)

Responsiveness

not measured

Stars over time

2024-09-25 · 12026-07-07 · 1

How these are measured

PracticesBeta

11 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/bbuchsbaum/deflist on 2026-10-18.

Continuous integration (3)

GitHub ActionsR CMD check workflowTravis CI (config file)

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 2026-03-29 · The repository has a site deploy workflow

pkgdown site last built 2026-03-29

Coverage (1)

Coverage reporting (Codecov)

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-03-29
Commits: at least 1 crediting it in the message
Cursorfirst seen 2026-09-09
Pull request it wrote: opened by a project member

Models named in its commits

Claude Opus 4.61 commit · Mar 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing deflist adds 11 packages (8 with compiled code, 3.2 MB of source tarballs). Heaviest: vctrs 1.0 MB, rlang 766 KB, cli 629 KB.

Depends (0)

none

Imports (4)

purrr memoise rlang assertthat

LinkingTo (0)

none

Suggests (4)

testthat covr knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Depends, Imports or LinkingTo, most downloaded first

neuroim2

How these are counted

Code & Tests

People & History

People (1)

Bradley Buchsbaum

Author, Maintainer since 0.2.0 (2023)

Releases (1)

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.2.0Latest
record
2023-04-27 · current release
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-04-27
Total releases: 1 / 3 yrs
License: LGPL (>= 2.1)
Download size: 12 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("deflist")

Format

Buchsbaum, B. (2023). deflist: Deferred List - A Read-Only List-Like Object with Deferred Access (Version 0.2.0) [Computer software]. https://doi.org/10.32614/CRAN.package.deflist

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 deflist version 0.2.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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