[diggan]

That's true. To be fair, if you come from a language like Ruby, JavaScript or Python, a REPL is basically a standalone experience, so I understand why people initially think it's like that, the name is more or less the same :) "Interactive Development" is maybe a better overall term that can lead to people thinking "Oh, what is that?" rather than "I've tried that already, what's the point?"

[worldsayshi]

I like that. So you're saying that the switch between REPL and writing a test is much more seamless in a clojure system. That makes a lot of sense to me.

[dandelion9]

At a basic level any Lisp-like with an editor integrated REPL lets you put your cursor over the `greet` invocation below and evaluate it, and have the results shown in the manner of your choice (IDE window, inline temporary comment, etc).

This is all in the file as saved to your version control:

  (defn greet [name] 
    (-> (str "Hello, " name "!")
         println))

  (comment
    (greet "worldsayshi"))

It's 90% of the way to being a test already, just from the typical workflow.