Nice talk. I agree with you that the repl in Clojure and Common Lisp etc is much more of a first class citizen in the development environment. What people often don't realize is how powerful the repl and worksheet can be in scala development.
Thanks, having editor integration with the application runtime completely changed my workflow. I simply couldn't go back now, having instant feedback on the code you write is extremely satisfying.
What surprises me is that none of mainstream languages provide this kind of environment. Lisp and Smalltalk have been around for many decades, and somehow this workflow ended up being completely neglected in the mainstream.
