CODEWITHSUNDEEP
clojureleiningen
1.618
1.618

Reputation: 875

How can I continue running with repl after -main instead of exit?

(ns secretary.core)

(defn -main
  [& args]
  (println args "Hello, World!"))

lein run 1 2 3

(1 2 3) Hello, World!

But I want it keep in REPL. Not exit.

Upvotes: 0

Views: 193

Answers (1)

Alan Thompson
Alan Thompson

Reputation: 29958

Try this:

(ns demo.core )

(defn -main
  [& args]
  (println "Got:" args ))

with the above code:

> lein repl
Java HotSpot(TM) 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a future release.
Compiling 2 source files to /home/alan/expr/demo/target/default/class-files
nREPL server started on port 46184 on host 127.0.0.1 - nrepl://127.0.0.1:46184
REPL-y 0.4.3, nREPL 0.6.0
Clojure 1.10.1
Java HotSpot(TM) 64-Bit Server VM 13+33

demo.core=> (ns demo.core)
nil
demo.core=> (-main 1 2 3)
Got: (1 2 3)

demo.core=> (+ 3 4)
7
demo.core=>

So, you start the REPL first, then call a function (even -main). You are still in the REPL when finished.

P.S. Although, my personal favorite, is to use the lein test-refresh plugin and write your experiments in unit-test style using your favorite editor.

Upvotes: 2

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