[Haskell] ETAPS 2017 early registration deadline approaching

Early registration deadline 12 March 2017! ** CALL FOR PARTICIPATION 20th European Joint Conferences on Theory And Practice of Software ETAPS 2017 Uppsala, Sweden, 22-29

Folding over short static lists

Hi, a common pattern is x `elem` [a,b,c] or x `elem` "/!#" instead of x == a || x == b || x == c or x == '/' || x == '!' || x == '#'. This used to be also what hlint suggested, although that hint was removed https://github.com/ndmitchell/hlint/issues/31. Upon closer inspection it seems