Top 6 Profunctor Open-Source Projects

• λ

  1 855 3.4 Java

  Functional patterns for Java

  

• DontFearTheProfunctorOptics

  3 409 0.0 Haskell

  Don't Fear the Profunctor Optics!

  

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• tomland

  3 120 6.1 Haskell

  🏝 Bidirectional TOML serialization

  

• prolens

  0 74 0.0 Haskell

  👓 Profunctor based lightweight implementation of Lenses

  

• one-liner

  0 48 2.7 Haskell

  Constraint-based generics

• cofree-bot

  1 39 5.0 Haskell

  A library for building bots compositionally.

  

Project mention: Ask HN: What side projects landed you a job? | news.ycombinator.com | 2023-12-03

Not a job per se, but some friends and I wrote a library for building compositional chatbots (like for IRC not LLMs necessarily) encoded as Mealy Machines: https://github.com/cofree-coffee/cofree-bot/

That project then has since led to a long term collaboration with the Topos Institute where we are building type theory for Polynomial Functors: https://github.com/toposInstitute/polytt

Polynomial Functors are a really powerful abstraction from Category Theory which subsumes the co-algebraic approach to finite state machines used in `cofree-bot` and which can also be used to encode wiring diagrams, tactics engines, game semantics, neural networks, and dynamical systems in general.

Profunctors related posts

• [ANN] toml-reader initial release: the *only* TOML v1.0.0-compliant parser

  1 project | /r/haskell | 7 Jun 2022

• Designing libraries in Haskell

  1 project | /r/haskell | 12 Dec 2021

• The romance of Haskell and Category Theory.

  2 projects | /r/haskell | 10 Nov 2021

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