https://github.com/paulhendricks/functools

Tools for Functional Programming in R
https://github.com/paulhendricks/functools

Last synced: 6 days ago
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Tools for Functional Programming in R

• Host: GitHub
• URL: https://github.com/paulhendricks/functools
• Owner: paulhendricks
• License: other
• Created: 2015-05-22T14:45:49.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2017-07-01T20:23:01.000Z (over 7 years ago)
• Last Synced: 2024-08-13T07:15:38.408Z (3 months ago)
• Language: R
• Homepage:
• Size: 317 KB
• Stars: 11
• Watchers: 3
• Forks: 1
• Open Issues: 3
• Metadata Files:
  • Readme: README.Rmd
  • License: LICENSE

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• jimsghstars - paulhendricks/functools - Tools for Functional Programming in R (R)

README

        
---

output:

  github_document

---

```{r, echo = FALSE}

knitr::opts_chunk$set(

  collapse = TRUE,

  comment = "#>",

  fig.path = "README-"

)

```

# functools

[![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/functools)](http://cran.r-project.org/package=functools)

[![Downloads from the RStudio CRAN mirror](http://cranlogs.r-pkg.org/badges/functools)](http://cran.rstudio.com/package=functools)

[![Build Status](https://travis-ci.org/paulhendricks/functools.png?branch=master)](https://travis-ci.org/paulhendricks/functools)

[![Build status](https://ci.appveyor.com/api/projects/status/au9ww7v8mhgr59s8/branch/master?svg=true)](https://ci.appveyor.com/project/paulhendricks/functools/branch/master)

[![codecov.io](http://codecov.io/github/paulhendricks/functools/coverage.svg?branch=master)](http://codecov.io/github/paulhendricks/functools?branch=master)

[![Project Status: Active - The project has reached a stable, usable state and is being actively developed.](http://www.repostatus.org/badges/0.1.0/active.svg)](http://www.repostatus.org/#active)

`functools` provides tools for Functional Programming in R. It accomplishes several goals:

* Add support to the usual higher order functional suspects (`Filter()`, `Map()`, `Reduce()`, etc.) with higher order functions (`Compose()`, `Memoise()`, `Partial()`, `Reject()`, `Fail_With()`, `Reduce_Right()`, `All()`, `Any()`, and `Best()`).

* Supply higher order function generators (`Andify()` and `Orify()`) to make composing predicate functions easier.

* Provide wrappers (`Apply()`, `Lapply()`, `Mapply()`, `Sapply()`, `Tapply()`, and `Vapply()`) around their respective base R functionals to create an API with consistent naming convention, positional arguments, and argument names.

* Implement common constants as functions (`True()`, `False()`, `Identity()`, `Null()`, and `Na()`) for point-free programming.

* Extend abstract concepts of existiness and truthiness through functions (`Existy()` and `Truthy()`).

functools achieves these goals through three main types of function design patterns:

* Closures (functions that take data and return functions)

* Functionals (functions that take functions and return data)

* Function Operators (functions that take functions and return functions)

## Installation

You can install the latest development version from CRAN:

```R

install.packages("functools")

````

Or from GitHub with:

```R

if (packageVersion("devtools") < 1.6) {

  install.packages("devtools")

}

devtools::install_github("paulhendricks/functools")

```

If you encounter a clear bug, please file a [minimal reproducible example](http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example) on [GitHub](https://github.com/paulhendricks/functools/issues).

## Citation

To cite package ‘functools’ in publications use:

```

Paul Hendricks (2015). functools: Functional Programming in R. R package version 0.2.0. https://CRAN.R-project.org/package=functools

```

A BibTeX entry for LaTeX users is

```

@Manual{,

  title = {functools: Functional Programming in R},

  author = {Paul Hendricks},

  year = {2015},

  note = {R package version 0.2.0},

  url = {https://CRAN.R-project.org/package=functools},

}

```