I analyzed Hackage by Hayoo! to find which libs already implemented flipped function application. Note: Hayoo! do not cover all Hackage. I have next result : ($$) - none package (%) - none package (|>) - none package (&) - lens (inixl 1) reverse apply (inixl 0) SimpleH (inixl 0) Clean (infix ?) (#) - diagrams-lib (inixl 8) util-util (inixr 2) sunroof-comiler (inixr 0) hdirect (inixl 1) hoodle-core (inixr 0) HJScript (inixl 8) funcmp (inixl 0) threepenny-gui (inixl 8) -- View this message in context: http://haskell.1045720.n5.nabble.com/Flipped-function-application-tp5738131p... Sent from the Haskell - Libraries mailing list archive at Nabble.com.