alt Hacker News> The biggest downside of Racket is that you can't build up your environment incrementally the way you can with Common Lisp/Sly. When you change anything in your source you reload REPL state from scratch.
I don’t quite understand… I’m using Racket in emacs/SLIME and I can eval-last-sexp, regions, etc.
Ah, I'm using racketmode which doesn't support live state buildup (and the builtin GUI doesn't either). What exactly is your setup? SLIME only has a Common Lisp backend, it doesn't support Racket to my knowledge.
EDIT: ok with geiser and geiser-racket incremental state buildup works really well. I rescind my objection!