Re: [Haskell-cafe] Usage of . and $

Quoth Steve Schafer, nevermore,

Parentheses require you to maintain a mental general-purpose push-down stack as you read the code. $, on the other hand, while it also requires you to maintain a sort of stack, it's a "monotonic" stack: you may need to push an arbitrary number of items, but you don't pop anything until you reach the end of the code. So the mental model required to read code containing $'s is simpler than that required for parentheses.

Which is the longer way of saying you don't need to count to make sure you closed all the brackets you opened! ;-) D. -- Dougal Stanton