Not directly related to this cheatsheet, but I was reminded by the section on operators: you can combine multiple binary operators to get something a lot like ternary operators. E.g., in ghci:

  Prelude GOA> let True ? x = \_ -> x ; False ? _ = \f -> f
  Prelude GOA> True ? 4 $ 5
  4
  Prelude GOA> False ? 4 $ 5
  5
  Prelude GOA> False ? 4 $ True ? 3 $ 7
  3
  Prelude GOA> False ? 4 $ False ? 3 $ 7
  7

Pretty neat, I think.