Example

An example of where I find it useful:

process :: String -> Q Exp
process = id
  .> splitOnCommas
  .> map nameAndValue
  .> joinAsColumns
  .> wrapInParens
  .> parseHsStrToQQExp
  .> return

(source: https://github.com/Wizek/dump/blob/48443d5/src/Debug/Dump.hs#L77)