($) is actually the least interesting operator in the world :) But as you say, its parsing precedence makes it useful (because it lets you skip parens). What I

($) is actually the least interesting operator in the world :) But as you say, its parsing precedence makes it useful (because it lets you skip parens). What I like is how ($) generalises to (<$>) for applicative functors, so you can write succ $ 5 -- -> 6 succ <$> Nothing -- -> Nothing succ <$> Just 5 -- -> Just 6 succ <$> [1, 2, 3] -- -> [2, 3, 4] Who needs "for" loops? :)