Functional programming

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.

GitHub: https://github.com/topics/functional-programming
Wikipedia: https://en.wikipedia.org/wiki/Functional_programming
Related Topics: oop, declarative-programming, procedural-programming, event-driven-programming,
Last updated: 2026-07-05 00:08:24 UTC
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https://github.com/daggerok/functional-and-reactive-principles-in-scala

Never too late! My learning process for 'Functional Programming Principles in Scala' and 'Principles of Reactive Programming in Scala' courses!

functional functional-programming functional-reactive-programming functional-testing scala

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https://github.com/denisdubochevalier/lambdac

WIP: Untyped lambda calculus compiler

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Implementation of monads in go with generics

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Minimalistic functional Sokoban (console, no mutable vars). Initially vibe coded with ChatGPT 5. Brought to working condition by Human Being 45.

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Type-safe policy DSL in Haskell. Algebraic data type Policy = Allow | Deny | When; predicates compose via And/Or/Not; pure total evaluator; Aeson JSON codec; Hspec + QuickCheck tests. Functional purity flex for the agent-governance theme.

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Simple Minesweeper game written in ISL with lambdas (a functional programming variant of Racket).

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Structuring data from .txt file to JavaScript object literal using higher-order functions.

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Library providing common functional utilities for the Lua programming language. Development of the library is currently frozen

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https://github.com/ignaciopieroni/functional-programming

We want to process a set of organizations from different industries to perform various queries about them using concepts from the functional paradigm. For each organization we know its name, website and other important fields. The main goal is to focus on modeling the data types and writing the necessary functions to perform the required analysis.

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Useful heuristics, type checks, and validation helpers for JavaScript and TypeScript

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Golang functional programming library

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Write Yourself a Scheme in 48 Hours

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🛠️ Develop and test Erlang applications effortlessly with erlang-1em, simplifying deployment and enhancing productivity for developers.

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https://github.com/marcin-chwedczuk/fpinscala

My solutions to the exercises from "Functional Programming in Scala" book.

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Functional programming course on Haskell.

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Pragmatic functional programming helpers for Python.

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https://github.com/swirrl/functional-rap

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Sharable ESLint configurations for the coding standards and rules at Mansa.

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please use ts-pattern instead

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https://github.com/leonardonicola/fp

Utility library for functional programming in Typescript

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https://github.com/primeeagle/concerto

A modern programming language with an advanced type system, supporting both object-oriented and functional programming paradigms.

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https://github.com/sigurd4/fn_zip

Provides a zip trait for functions, allowing two functions to be combined at compile-time before being called.

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A collection of utility functions to make your TypeScript code more robust and safer.

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