Uploaded April 2026 | Updated September 2026, 3 weeks ago
The thumbnail painting is "Oberon, Titania, and Puck with Fairies Dancing" (1789) by William Blake. In Set 12 of Haskell for Dilettantes we get some more practice implementing (and using) typeclasses for Functor and Foldable.
The thumbnail painting is "Oberon, Titania, and Puck with Fairies Dancing" (1789) by William Blake. In Set 12 of Haskell for Dilettantes we get some more practice implementing (and using) typeclasses for Functor and Foldable.










