In computer science,functional programming is a programming paradigm where programs are constructed by applying and composing functions. It is a declarative programming paradigm in which function definitions are trees of expressions that map values to other values, rather than a sequence of imperative statements which update the running state of the program.

Mostly adequate guide to FP (in javascript)

• UpdatedSep 17, 2024
• JavaScript

Jargon from the functional programming world in simple terms!

• UpdatedOct 17, 2023

♞ lichess.org: the forever free, adless and open source chess server ♞

• UpdatedJul 12, 2025
• Scala

Pragmatic, balanced FP in JavaScript. @FLJSBook on twitter.

• UpdatedDec 26, 2023
• JavaScript

Nix, the purely functional package manager

• UpdatedJul 12, 2025
• C++

Scala 2 compiler and standard library. Scala 2 bugs athttps://github.com/scala/bug; Scala 3 athttps://github.com/scala/scala3

• UpdatedJul 1, 2025
• Scala

Bartosz Milewski's 'Category Theory for Programmers' unofficial PDF and LaTeX source

• UpdatedJul 9, 2025
• TeX

Functional programming in TypeScript

• UpdatedApr 18, 2025
• TypeScript

MIT视频公开课《计算机程序的构造和解释》中文化项目及课程学习资料搜集。

• UpdatedSep 27, 2023
• Ruby

A functional and reactive JavaScript framework for predictable code

• UpdatedNov 29, 2023
• TypeScript

Kickstarter for iOS. Bring new ideas to life, anywhere.

• UpdatedJul 10, 2025
• Swift

An assembled flutter application framework.

• UpdatedFeb 17, 2022
• Dart

🐼 Chinese translations for classic software development resources

• UpdatedMar 9, 2025

C# pure functional programming framework - come and get declarative!

• UpdatedJul 1, 2025
• C#

The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming

• UpdatedJul 11, 2025
• Kotlin

Book of Elementary Functional Algorithms and Data structures

• UpdatedJan 2, 2025
• TeX

Type-Safe Errors for JS & TypeScript

• UpdatedMar 11, 2025
• TypeScript

🌙 The minimal & fast library for functional user interfaces

• UpdatedFeb 29, 2024
• JavaScript

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

• UpdatedJul 12, 2025
• Java

Kickstarter for Android. Bring new ideas to life, anywhere.

• UpdatedJul 10, 2025
• Kotlin