Some tools to use Haskell in a shell pipe. ex: cat stats.dat | hask 'maplines (nth 1 |> to_float) |> maximum'

ghci

import Control.Category ((>>>))

let io h = interact $ (++"\n") . show . h
let maplines h =  map (h . words) . lines
let to_float = read :: String -> Float
let nth = flip (!!)
let (|>) = (>>>) ::  (a -> b) -> (b -> c) -> (a -> c)

zshrc

hask () {
	ghc -e "io \$ $*"
}