• School of Haskell: Basics (2013) https://www.schoolofhaskell.com/school/starting-with-haskell/basics-of-haskell 32 comments 9/11/2022

• School of Haskell—Basic Lensing https://www.fpcomplete.com/user/tel/basic-lensing 39 comments 20/3/2013 haskell