A modern proof language

dependent-types functional-programming lambda-calculus type-theory theorem-prover formality moonad proof-language proof-languages

• Updated Jan 22, 2025
• Haskell

Building a modern functional compiler from first principles.

rust haskell compiler llvm lambda-calculus type-inference

• Updated Oct 28, 2026
• Rust

A library for functional programming in Rust

rust functional-programming lambda-calculus monad functor category-theory monoid hkt applicative homomorphism comonad morphism

• Updated Mar 12, 2026
• Rust

十分钟魔法练习

java tutorial functional-programming lambda-calculus monad hkt adt formal-verification formal-proofs

• Updated Sep 2, 2023
• HTML

Canonical sources for HOL4 theorem-proving system. Branch develop is where “mainline development” occurs; when develop passes our regression tests, master is merged forward to catch up.

lambda-calculus theorem-proving higher-order-logic

• Updated Nov 12, 2026
• Standard ML

x86 C compiler written in untyped lambda calculus

c compiler lambda-calculus c-compiler ski-combinator-calculus

• Updated Oct 7, 2022
• Common Lisp

A Flock of Functions: Combinators, Lambda Calculus, & Church Encodings in JS

javascript functional-programming lambda-calculus composition mathematics combinatory-logic currying theory-of-computation combinators church-encodings

• Updated Feb 3, 2024
• JavaScript

An interpreter for learning and exploring pure λ-calculus

language programming-language lambda interpreter functional-programming lambda-calculus church church-encoding logic-programming numeral-systems computability-theory computability

• Updated Apr 11, 2021
• Haskell

Cedille, a dependently typed programming languages based on the Calculus of Dependent Lambda Eliminations

programming-language dependent-types lambda-calculus dependent-intersections

• Updated Oct 23, 2023
• Agda

Method for Long Context RLMs using verifiable Lambda Calculus

functional-programming lambda-calculus reasoning llm long-context llm-inference document-qa recursive-language-model recursive-language-models

• Updated Apr 24, 2026
• Python

A human readable quasi-concatenative programming language

c language programming-language interpreter compiler functional-programming natural-language lambda-calculus forth combinatorics closures prefix-notation stack-language forth-like stack-based-language based-stack-based-language proglangs-discord

• Updated Aug 3, 2026
• C

Automatic code generation for Scala functions and expressions via the Curry-Howard isomorphism

scala functional-programming lambda-calculus scala-macros code-generation automated-theorem-provers theorem-prover intuitionistic-logic curry-howard-isomorphism lambda-terms

• Updated May 25, 2025
• Scala

A Lisp interpreter written in untyped lambda calculus

lisp interpreter repl lambda-calculus lisp-interpreter

• Updated Mar 10, 2023
• Common Lisp

Exercises from Benjamin Pierce's "Types and Programming Languages" textbook + extras!

types lambda-calculus type-theory programming-languages tapl types-and-programming-languages

• Updated Jul 26, 2020
• Rust

Elsa is a lambda calculus evaluator

haskell lambda-calculus reduction haskell-learning

• Updated Oct 5, 2025
• Haskell

A curated list of functional programming resources to study the fp paradigm

lambda-calculus programming-languages hacktoberfest

• Updated Jul 27, 2024

Animations of lambda term reduction sequences

lambda-calculus

• Updated May 30, 2018
• Haskell

🍱 Y Combinator for Non-programmers: A Wild Introduction to Computer Science

react typescript functional-programming reactjs lambda-calculus y-combinator

• Updated Aug 3, 2023
• TypeScript

Coq formalizations of functional languages.

lambda-calculus coq proof theory coq-formalizations

• Updated Jul 2, 2020
• Coq

🧮 Programming with pure lambda calculus

programming-language lambda-calculus combinatory-logic church-encoding balanced-ternary abstract-machine de-bruijn call-by-need

• Updated Jul 16, 2026
• Haskell