matchr

Pattern Matching and Enumerated Types in R

v0.1.0 · Sep 9, 2021 · MIT + file LICENSE

Description

Inspired by pattern matching and enum types in Rust and many functional programming languages, this package offers an updated version of the 'switch' function called 'Match' that accepts atomic values, functions, expressions, and enum variants. Conditions and return expressions are separated by '->' and multiple conditions can be associated with the same return expression using '|'. 'Match' also includes support for 'fallthrough'. The package also replicates the Result and Option enums from Rust.

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CRAN Check Status

14 NOTE

Show all 14 flavors

Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	NOTE	31.5s
r-devel-linux-x86_64-debian-gcc	NOTE	24.8s
r-devel-linux-x86_64-fedora-clang	NOTE	50.7s
r-devel-linux-x86_64-fedora-gcc	NOTE	46.4s
r-devel-macos-arm64	NOTE	12s
r-devel-windows-x86_64	NOTE	56s
r-oldrel-macos-arm64	NOTE
r-oldrel-macos-x86_64	NOTE	31s
r-oldrel-windows-x86_64	NOTE	61s
r-patched-linux-x86_64	NOTE	29.7s
r-release-linux-x86_64	NOTE	28.2s
r-release-macos-arm64	NOTE
r-release-macos-x86_64	NOTE	41s
r-release-windows-x86_64	NOTE	54s

Check details (16 non-OK)

NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘Christopher Mann <cmann3@unl.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Christopher",
                    family = "Mann",
                    role = c("aut", "cre"),
                    email = "cmann3@unl.edu")
as necessary.

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘Christopher Mann <cmann3@unl.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Christopher",
                    family = "Mann",
                    role = c("aut", "cre"),
                    email = "cmann3@unl.edu")
as necessary.

NOTE r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-macos-arm64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-windows-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-oldrel-macos-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

Check History

NOTE 0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘Christopher Mann <cmann3@unl.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Christopher",
                    family = "Mann",
                    role = c("aut", "cre"),
                    email = "cmann3@unl.edu")
as necessary.

NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘Christopher Mann <cmann3@unl.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Christopher",
                    family = "Mann",
                    role = c("aut", "cre"),
                    email = "cmann3@unl.edu")
as necessary.

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-macos-arm64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-devel-windows-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-oldrel-macos-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) Match.Rd:90: Lost braces; missing escapes or markup?
    90 | expression in braces. For example, the condition "{[ab]*}" is equivalent
       |                                                   ^

matchr

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