Marco Baringer's SLIME Tutorial Video

This is what the lisp repl is like. There's not much else like it: ▶ this video PS: You can also do copy and paste :)

Not really. With Clojure you don't even have to leave your editor (I use Emacs with the fantastic CIDER package). You can put your cursor over an S-expression, hit two keys, and evaluate and see the results of the S-expression directly within the text buffer. The feedback loop is so quick it's basically instant - even tabbing over to a browser or terminal window feels lethargic in comparison. I haven't used Common Lisp much, but I've seen a few really impressive demos of debugging in its available REPLs. This is a longer one, but a good tour of SLIME (also an Emacs package): ▶ this video

I'm not saying that I don't understand the appeal; it's just that interactive development is usually done in Jupyter Notebooks due to the shortcomings of various editors not able to do code evaluation. I'm dreaming about something like Emacs Slime[0] for other languages (that aren't Common Lisp) where you can write code, evaluate it in the editor, switch to the REPL and test it, recompile while debugging.... etc. [1] And the most similar tool of the other languages... is basically jupyter-notebook. There is no such tool for interactive development except with the bare-bone REPL in the shell. [0] link [1] ▶ this video , link ,