I'm doing this year's advent of code with literate org-mode buffers using common lisp. Been a surprising amount of fun. And I'm coming around to the idea that the loop macro is where most languages are ultimately converging.<p>That and format. Which is remarkable. Certainly dense, but in a "this code is clearly responsible for making a string of that list, serves no other purpose." Something lacking in basically every other language, where a depressing amount of coffee exists simply to make a string of a list of objects. (Amusing, as Java finally got streams, which can look like LOOP, but with more periods. And probably more parens...)