C# pure functional programming framework - come and get declarative!

c-sharp monads functional-programming records functional-languages f-sharp monad functor lenses monoid semigroup monad-transformers applicative immutable-collections bcl immutable-types higher-kinded-types language-ext ad-hoc-polymorphism structural-equality

• Updated Oct 9, 2026
• C#

List of papers studying machine learning through the lens of category theory

machine-learning category-theory neural-networks lenses

• Updated Oct 2, 2026
• Python

Funktional generic type-level programming in Rust: HList, Coproduct, Generic, LabelledGeneric, Validated, Monoid and friends.

rust generic fp generic-programming lenses hlist type-level type-level-programming validated labelled-generic coproduct datatype-generic-programming

• Updated Aug 1, 2026
• Rust

Functional optics: a (partial) porting of Scala monocle

typescript functional-programming lenses optics

• Updated Dec 9, 2022
• TypeScript

Extensions for F#

extensions arrow-functions generic-functions f-sharp lenses monad-transformers computation-expressions

• Updated Aug 12, 2026
• F#

Functional patterns for Java

java lambda functional-programming tuples io-monad algebraic-data-types monad functor lenses monoid semigroup optics either hlist profunctors traversable coproduct maybe-monad bifunctors try-monad

• Updated May 1, 2023
• Java

Modify deeply nested case class fields

scala functional-programming lenses

• Updated Nov 1, 2026
• Scala

Program user interfaces the FRP way.

react typescript rxjs state-management lenses

• Updated Oct 23, 2023
• TypeScript

LensVM is a WASM based data transformation engine utilizing bi-direction lenses

data webassembly wasm lenses transformation

• Updated Jun 8, 2026
• Go

Generically derive traversals, lenses, and prisms.

generics lenses optics type-level-programming traversals

• Updated Aug 27, 2025
• Haskell

Don't Fear the Profunctor Optics!

immutability lenses optics modularity profunctors profunctor-optics

• Updated Apr 15, 2025
• Haskell

Fastest tool to access data in Elixir

elixir nested-structures macros lenses lens

• Updated Aug 16, 2025
• Elixir

A python lens library for manipulating deeply nested immutable structures

python immutable functional-programming prism traversal lenses lens optics immutable-datastructures functional-optics

• Updated Nov 9, 2026
• Python

React Hook for state management with profunctor lenses

react lenses profunctors react-hooks

• Updated Jan 13, 2020
• JavaScript

A lightweight (but compatible with ‘lens’) lenses library

haskell lenses

• Updated Sep 29, 2025
• Haskell

Lightweight Elixir lenses

elixir lenses

• Updated Oct 21, 2021
• Elixir

How does it all fit together?

react reactive state-management lenses observables

• Updated Jan 6, 2019

Yet another Scala lens macro

scala lenses scala-macros

• Updated Mar 22, 2015
• Scala

Functional abstractions to manipulate complex records in Elm - Iso, Prism, Lens, Optional, Traversal.

prism elm traversal lenses lens elm-lang monocle elm-monocle manipulate-complex-records

• Updated Sep 21, 2021
• Elm

Documentation and samples of Snap's Camera Kit SDK. For the high-level documentation of Camera Kit, please visit: https://docs.snap.com/snap-kit/camera-kit/home

android ios mobile sdk camera snap kit ar lenses lens lens-studio camera-kit

• Updated Oct 30, 2026