I owe so much to this blog! It was such an inspiring read when I started out programming in Haskell back in 2007.

Today I am a professor in computer science and still draw on it for examples in my advanced functional programming course. Just last week we did the loeb function, as an example of interesting use of Functor.

Loeb function: http://blog.sigfpe.com/2006/11/from-l-theorem-to-spreadsheet...