• Catamorphisms
• Recursion Schemes: A Field Guide (Redux)
• Catamorphisms - Definition on the Haskell Wiki.
• Rotating Squares - Using a hylomorphism to rotate a quadtree by Jared Tobin.
• Recursion Schemes, Part V: Hello, Hylomorphisms
• Promorphisms, Pre and Post - Practical examples of pre- and postpromorphisms by Jared Tobin.
• Time Traveling Recursion Schemes - Exploring histo and futu by example by Jared Tobin.
• Recursion Schemes, Part IV: Time is of the Essence - Practical article about histomorphism and the futumorphism.
• Cheat Sheet - Map of various recursion schemes and their duals.
• Correcting the Visitor pattern - Showing that the Visitor pattern implements an f-algebra for use with a catamorphism (in Java).
• Recursion Schemes in Scala - Introduces the fixpoint combinator, anamorphism, catamorphism, hylomorphism, paramorphism, apomorphism, histomorphism, dynamorphism and futumorphism.
• What's in a Fold: The Basic Catamorphism in recursion-schemes - Introduces catamorphism as a generalization of fold.

Hylomorphisms in the Wild

• Stalking a Hylomorphism in the Wild - Advent of Code 2017, Domino challenge
• Open Seasons on Hylomorphisms - Advent of Code 2018, String comparison challenge

Hylomorphisms in the Wild

• Functional Programming with Bananas, Lenses, Envelopes and Barbed Wire, 1991, Meijer et al.
• A Duality of Sorts, 2013, Hinze et al.
• Sorting with Bialgebras and Distributive Laws, 2012, Hinze et al.
• Scrap your boilerplate: a practical design pattern for generic programming, 2003, SPJ et al.
• Scrap your boilerplate: a practical design pattern for generic programming, 2003, SPJ et al.

Hylomorphisms in the Wild

• Slidedecks by Tim Philip Williams
• Unifying Structured Recursion Schemes
• Recursion Schemes
• F-algebras or: How I Learned to Stop Worrying and Love the Type System
• A Gentle Introduction to Recursion Schemes
• Bracer: Transforming Real-World Languages with Coproducts and Recursion Schemes - High-level talk about structuring programs with coproducts and recursion schemes by Patrick Thomson.
• Recursion: Where Functional Programming Hits Bottom - Introduction to recursive fix point data structures and recursion schemes in Haskell and Scala by Greg Pfeil.
• Programming with algebras - Bartosz Milewski's article in talk form, presented at LambdaCon.
• Peeling the Banana: Recursion Schemes from First Principles - Zainab Ali's Introductory talk presented at LambdaWorld.

Hylomorphisms in the Wild

• The Hitchhiker's Guide to Morphisms - Overview of different morphisms including a printable PDF.

Hylomorphisms in the Wild

• Magic Read Along - Casual discussions about
• Scala Love - Podcast about Scala that brings up
• the second episode
• The Haskell Cast - Recursion schemes come up in
• Episode 13 with John Wiegley