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by malvosenior 4427 days ago
The beauty of Clojure (and all functional languages) is that everything your app does is made of very small functions composed together. You wouldn't really simulate the round trip http request via the REPL but you can change and test idempotent functions independent of each other. Most Clojure functions are under 15 lines of code.

You can also mess around with transforming state that you may have stored in an atom...