[Haskell-cafe] Infrastructure for testing the impact of a Functor/Applicative/Monad hierarchy

[Stephen Tetley]

Has anyone surveyed the in-print textbooks, tutorials, or tried to
assess how much Haskell (H98, H2010, Glasgow Haskell?) is used in
teaching?

Having the wrong hierarchy is a minor annoyance to us members of the
cognoscenti, but a change outside a revision of the language standard
could leave a lot of beginners and the teaching material they rely on
stranded.