C# functional language extensions - a base class library for functional programming

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

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

Functional optics: a (partial) porting of Scala monocle

Functional patterns for Java

Extensions for F#

Modify deeply nested case class fields

Program user interfaces the FRP way.

Generically derive traversals, lenses, and prisms.

Don't Fear the Profunctor Optics!

Fastest tool to access data in Elixir

React Hook for state management with profunctor lenses

A python lens library for manipulating deeply nested immutable structures

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

Lightweight Elixir lenses

How does it all fit together?

Yet another Scala lens macro

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

Text lenses using PCRE regexes

pure functional and generic programming for Erlang