Conor McBride and Ross Paterson. in Journal of Functional Programming 18:1 (2008), pages 1-13. Abstract In this paper, we introduce Applicative functors--an abstract characterisation of an applicative style of effectful programming, weaker than Monads and hence more widespread. Indeed, it is the ubiquity of this programming pattern that drew us to the abstraction. We retrace our steps in this pape
