https://github.com/lexi-lambda/functional

Functional interfaces and datatypes for Racket
https://github.com/lexi-lambda/functional

Last synced: about 2 months ago
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Functional interfaces and datatypes for Racket

• Host: GitHub
• URL: https://github.com/lexi-lambda/functional
• Owner: lexi-lambda
• License: isc
• Created: 2016-04-19T06:20:50.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2021-07-01T21:41:37.000Z (over 3 years ago)
• Last Synced: 2024-04-13T09:06:35.651Z (9 months ago)
• Language: Racket
• Size: 75.2 KB
• Stars: 42
• Watchers: 3
• Forks: 9
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-racket-and-scheme - functional

README

        
# functional [![Build Status](https://travis-ci.org/lexi-lambda/functional.svg?branch=master)](https://travis-ci.org/lexi-lambda/functional) [![Coverage Status](https://coveralls.io/repos/github/lexi-lambda/functional/badge.svg?branch=master)](https://coveralls.io/github/lexi-lambda/functional?branch=master)

This library provides **functional programming utilities** for Racket, including interfaces, such as functors and monads, and common data types that implement those interfaces, such as maybe and either.

Here’s an example of performing monadic computations using `functional`:

```racket

#lang racket

(require data/applicative

         data/monad

         data/maybe)

(define try-bytes->string/utf8

  (curry exn->maybe exn:fail:contract? bytes->string/utf-8))

(define input-char-length

  (do [str <- (try-bytes->string/utf-8 (port->bytes))]

      (pure (length str))))

```

[**For more information, see the documentation.**][functional-doc]

[functional-doc]: http://docs.racket-lang.org/functional/index.html