typeclasses

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

The pure asynchronous runtime for Scala

Lambda the ultimate Pattern Factory: FP, Haskell, Typeclassopedia vs Software Design Patterns

Easy, fast, transparent generic derivation of typeclass instances

Smart, pythonic, ad-hoc, typed polymorphism for Python

learn-by-doing course/tutorial for functional programming on scala

🛒 The Shopping Cart application developed in the book "Practical FP in Scala: A hands-on approach"

Functional programming toolbox

Functional programming great resources

Functional companion to Kotlin's Compiler

Full-featured interfaces for C99

cats transformer type classes.

Seamless interop layer between cats and scalaz

A library of abstract interfaces for mathematical structures in Coq [maintainer=@spitters,@Lysxia]

Functional Programming library for Java

Tiny independent libraries with a single purpose, often a single class

Cheat Sheets for programming languages and tools

Learn Functional Programming in Scala

📚 A demonstration of implementing a "type-safe" lazy iterator interface in pure C99

Higher-kinded types, monads and composable effects for Java 25: the Effect Path API for railway-style error handling, advanced optics (lens/prism/traversal) with code generation for records and sealed types, compile-time DTO mapping that reports every bad field, and Spring Boot integration.