Scheme / Guile / Racket
I've often said that I would love to take @cwebber's brain and shake it to see what all pops out because I know that anything in there will be amazing. One of the languages that he introduced me to was Scheme. Scheme is a functional language that borrows heavily from Lisp. It's a teaching language but still retains a lot of Lisp's power. I haven't explored it fully but I want to get back there again.
@craigmaloney Aw thanks! I'd prefer my brain unshaken but I'm happy to share thoughts anyway #dustycloudbrainstorms
@cwebber Well, yeah, metaphorically speaking of course.
(hides the tumbler and funnel.)
for me picking up Haskell in my undergrad was very enlightening, and it remains my favourite language to day. i've been slowly looking into Lean for a while, and i really like the impression.
but those are much closer to ML. in the land of lisp, i've done some elisp, and as fun as it is, i don't particularly love it. i'm looking into Guile and Racket next :) @MutoShack 's intro post is cool http://muto.ca/planting-flowers-in-guile.html