R Observatory: Metrics for memoise version 2.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

memoise

2.0.1Package record

'Memoisation' of Functions

160packages dependsuggested by 18

12.5Mdownloads / year

53.8%test coverage

13/13flavors OK

Overview

About

Maintained by Winston ChangCRAN page ↗GitHub ↗Website ↗Issues ↗

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. 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-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). 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
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.0.1

READMEYes · 620 wordsVignettesNoNEWSYes · 100% structured · mentions 2.0.1Citation fileNoWebsiteYes · pkgdown

Help pages: 10
Examples that run: 67%6 run in a plain check · 3 never run
Exported functions with examples: 90%
Documented parameters: 94%
Return-value docs: 30%
Help pages citing references: 0%

How these are measured

Downloads

12.5M

CRAN downloads in the past year

Rank #61 · ~34.3K/day · ~1M/mo

Releases R versions

Daily download trend is not available in this view yet.

913.6K30 days

2.9M90 days

12.5M1 year

Compare downloads with other packages →

Also on210.4K r2u133 autocran1.5M conda_forge20.8K c2d4u

How downloads are counted

Repository

r-lib/memoise ↗Organization: r-lib

322Stars

58Forks

39Open issues

8Open PRs

5Releases

244Commits

27Commit identities

rmemoise

244 commits · Last activity 2023-12-05 · +0.3% stars, 30d · Default branch at 2.0.1.9000, ahead of CRAN 2.0.1 (checked 2026-10-21)

Responsiveness

How these are sampled

PRs merged (all time): 70%
Median days to close, 50 most recently updated closed issues: 32
Median days to close, 50 most recently updated closed PRs: 4

Stars over time

2025-09-04 · 3202026-09-25 · 322

How these are measured

PracticesBeta

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

Checks run against github.com/r-lib/memoise 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 2021-06-29 · The repository has a site deploy workflow

pkgdown site last built 2021-06-29, before release 2.0.1 (2021-11-26)

Coverage (1)

Coverage reporting (Codecov)

CRAN release process (2)

cran-comments.mdrevdep/

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Installing memoise adds 3 packages (3 with compiled code, 839 KB of source tarballs). Heaviest: rlang 766 KB, fastmap 46 KB, cachem 27 KB.

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

160direct

3,900indirect

Depends 3 · Imports 157

Suggested by 18

Show the 48 most downloaded dependentsHide the 48 most downloaded dependents

Depends, Imports or LinkingTo, most downloaded first

and 112 more dependents and 18 packages that suggest it on CRAN ↗

How these are counted

Code & Tests

People & History

People (6)

Winston Chang

Author, Maintainer since 2.0.1 (2021) · 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

Mark Edmondson

Contributor · added in 2.0.0

Previously maintained by Jim Hester (1.0.0 to 2.0.0) and Hadley Wickham (0.1 to 0.2.1).

Releases (7)

Pick two releases to compare their code metrics.

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
R
R 4.1.0 released · 2021-05-18
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
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
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

Show 10 earlier eventsHide 10 earlier events

R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
2.12.0Latest
record
2010-09-03 · current release · diff ↗
2.0.1
record
2021-11-26 · diff ↗
2.0.0
record
2021-01-26 · diff ↗ ·
added 2 exports
cache_gcs, drop_cache
1.1.0
record
2017-04-21 · diff ↗ ·
added 3 exports
cache_filesystem, cache_memory, cache_s3
1.0.0
record
2016-01-29 · diff ↗ ·
added 2 exports
has_cache, timeout
0.2.1
record
2014-04-22 · diff ↗ ·
added 2 exports
is.memoised, is.memoized
0.1
record
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

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 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 memoise version 2.0.1 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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