{-# LANGUAGE ViewPatterns #-}

example f (f -> 4) = True

f (t -> Nothing) = "Nothing"
f (t -> Just _) = "Just"

g ((f, _), f -> 4) = True

multiline
  ( t ->
      Foo
        bar
        baz
    ) = True

-- https://github.com/tweag/ormolu/issues/343
foo = (f -> 4)