deflist

0.2.0

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

1packages depend

5.8Kdownloads / year

80.9%test coverage

13/13checks pass

Overview

About

Maintained by Bradley BuchsbaumFirst published 2023-04-271 releasesCRAN page ↗

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)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.

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

# 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).

Health

CRAN checks

13OK

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

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-06-08
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation signals are not tracked yet for this package.

Downloads

5.8K

CRAN downloads in the past year

Rank #5,151 · ~16/day · ~485/mo

deflist Releases R versions

Daily download trend is not available in this view yet.

58630 days

1.8K90 days

5.8K1 year

Compare downloads with other packages →

Also on108 r2u18 autocran

Repository

GitHub ↗ bbuchsbaum/deflist

1Stars

0Forks

0Open issues

0Open PRs

0Releases

28Commits

2Contributors

rr-package

License LGPL-2.1 · 28 commits · Last activity 2026-03-29

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/bbuchsbaum/deflist on 2026-07-19.

Continuous integration (2)

GitHub ActionsTravis CI

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

Show all practices

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

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

neuroim2

Code & Tests

People & History

People (1)

Maintainer (1)

Bradley Buchsbaum

Author, Maintainer

Authors (1)

Bradley Buchsbaum

Author, Maintainer

Package Timeline

1 release. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.2.0Latest
2026-03-10 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2023-04-27
Total releases: 1 / 3 yrs
License: LGPL (>= 2.1)
Download size: 12 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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