I'll add that a nice little benefit of using: a . b . c . d $ e over: a $ b $ c $ d $ e is that any sub-expression taken from the first expression is va

I'll add that a nice little benefit of using: a . b . c . d $ e over: a $ b $ c $ d $ e is that any sub-expression taken from the first expression is valid and can be refactored out into its own name. (.) is associative and ($) is not.