R Observatory: Metrics for memoise version 2.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

memoise

2.0.1

'Memoisation' of Functions

177packages depend

12.5Mdownloads / year

53.8%test coverage

13/13checks pass

Overview

About

Maintained by Winston ChangFirst published 2010-09-037 releasesCRAN page ↗GitHub ↗

Cache the results of a function so that when you call it again with the same arguments it returns the previously computed value.

Install

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

install.packages("memoise", 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("r-lib/memoise")

Development version from r-lib/memoise. 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-memoise

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-memoise

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-memoise

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

Health

CRAN checks

13OK

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

Code health

Yes

Tests · ratio 0.83

53.8%

Coverage · measured lines

100%

Documentation · exports

2

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 620 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 67%
Documented parameters: 94%
Return-value docs: 30%
References docs: 0%

Downloads

12.5M

CRAN downloads in the past year

Rank #65 · ~34.3K/day · ~1M/mo

Releases R versions

Daily download trend is not available in this view yet.

1M30 days

3.2M90 days

12.5M1 year

Compare downloads with other packages →

Also on154.9K r2u109 autocran1.2M conda_forge5.2K c2d4u

Repository

GitHub ↗ r-lib/memoise

321Stars

58Forks

39Open issues

8Open PRs

5Releases

244Commits

27Contributors

rmemoise

244 commits · Last activity 2023-12-05 · 0% stars, 30d

Stars over time

2025-07-30 · 3192026-07-07 · 321

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/r-lib/memoise on 2026-08-16.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

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

9 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (2)

rlang cachem

LinkingTo (0)

none

Suggests (7)

digest aws.s3 covr googleAuthR googleCloudStorageR httr testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

177direct

3,792indirect

and 129 more packages.

Code & Tests

People & History

People (6)

Maintainer (1)

Winston Chang

Author, Maintainer · added in 2.0.0

Authors (5)

Winston Chang

Author, Maintainer · added in 2.0.0

Daniel Cook

Author · added in 1.1.0

Jim Hester

Author · added in 1.0.0

Kirill Müller

Author · added in 1.0.0

Hadley Wickham

Author

Contributors (1)

Mark Edmondson

Contributor · added in 2.0.0

Package Timeline

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

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
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
2.0.1Latest
2021-11-26 · current release · diff ↗
R
R 4.1.0 released · 2021-05-18
2.0.0
2021-01-26 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.1.0
2017-04-21 · diff ↗
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
1.0.0
2016-01-29 · diff ↗
R
R 3.2.0 released · 2015-04-16

Show 10 earlier events

0.2.1
2014-04-22 · diff ↗
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03
R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
2.12.0
2010-09-03 · diff ↗
0.1
2010-09-03
R
R 2.11.0 released · 2010-04-22

Package metadata

First published: 2010-09-03
Total releases: 7 / 16 yrs
License: MIT + file LICENSE OSI
Download size: 17 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("memoise")

Format

Chang, W., Cook, D., Edmondson, M., Hester, J., Müller, K., & Wickham, H. (2021). memoise: 'Memoisation' of Functions (Version 2.0.1) [Computer software]. https://doi.org/10.32614/CRAN.package.memoise

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 memoise version 2.0.1 [Data set]. HJJB, LLC. Data release v2026-08-16. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-16, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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