type-systems

An analysis tool for Python that blurs the line between testing and type systems.

A garden of small programming language implementations 🪴

Tiny ML, Rust types, and category theory, executable structure, not AI magic.

Reproduction Package for the paper "Type-Constrained Code Generation with Language Models" [PLDI 2025]

Playing with type systems

A collection of programming languages and type systems.

C++ Implementations of programming languages and type systems studied in "Types and Programming Languages" by Benjamin C. Pierce..

Hindley–Milner type inference implemented in Python.

OCaml inspired language

Type system workshop for reactathon

The Agda mechanization of a gradual security-typed programming language with general mutable references.

Demo code showing off the new true exhaustiveness checks with Python 3.10 + Pyright

Naming is programming. Renaming a field changes what the model computes. Alpha equivalence breaks when the compilation target reads natural language.

Experimental language for exploring scoped effects, named scopes, and coeffects

TLC SRC — The software industry is broken — let's reboot the industry instead of our programs!

Resource-safe, effect-typed programs in syntax you already know. A checked affine core with familiar Faces — JavaScript-, Python-, functional-, and pseudocode-shaped surfaces — compiling to typed WebAssembly.

Research language whose affine/QTT core is proved sound twice — Coq and Idris2, axiom-free and CI-gated — with the verified usage-checker ported into the Rust compiler. Nested Solo ⊂ Duet ⊂ Ensemble dialects, session-typed concurrency, echo types for loss that isn't erasure. Early alpha.

Python-syntax AffineScript — write Python-style code, get affine resource guarantees and typed WASM

“String is not a sufficient type: how using your type system can help you make better software”

A repository of sample languages with coeffect type systems