> I think in large part of what your saying is good about REPLs is that they allow hot code swapping but that is only IMO really one part of the REPL. The key t

> I think in large part of what your saying is good about REPLs is that they allow hot code swapping but that is only IMO really one part of the REPL. The key to really good REPL should be human input (think Excel) and human output (think images and graphs). I definitely could have spent more time on this part in the article. You may want to have a look at Proto-REPL (https://atom.io/packages/proto-repl https://atom.io/packages/proto-repl), which is one of Clojure's REPLs (for the Atom editor)