Functors, Applicatives, And Monads In Pictures

[Mark Godfrey]

I mentioned this in the bar after last night's meetup, I'd be interested to hear what people (with or without prior experience/knowledge of monads) think of it.

http://adit.io/posts/2013-04-17-functors,_applicatives,_and_monads_in_pictures.html

The author posted a follow up article last month:

http://adit.io/posts/2013-07-22-lenses-in-pictures.html