Create a Project

_{(code for this section)}

Make a folder for your project and cd into it.
$ mkdir project $ cd project
Create a file called Justfile and put the following into it.
# Shows available recipies help: just --list

Test that using `just help`


          $ just help
just --list
Available recipes:
    help # Shows available recipes

Create a folder named src
$ mkdir -p src
Put a file named deps.edn in that folder with the following contents.

This is what sets the version of Clojure to use and tells Clojure that your code will be in the src folder.
{:paths ["src"] :deps {org.clojure/clojure {:mvn/version "1.12.0"}}}
Pick a top level namespace for your project.

For the rest of this we will use example, but feel free to pick something else. Just replace example in all the following instructions with whatever you picked
Put a file named main.clj in that folder with the following contents.
(ns example.main) (defn -main [] (println "Hello, world"))
Run that file
$ clojure -M -m example.main Hello, world
The first -M means you are want to run the function named -main. The second, lower-cased, -m means you want to run the -main function in the example.main namespace.


          # Shows available recipes
help:
    just --list
                
run:
    clojure -M -m main

Run your project with just run

This will be very useful once running your project takes more than an easy to remember command.
$ just run clojure -M -m main Hello, world

After all that, you should have a project structure that looks like this. You can check using the tree command.


      src/
  main.clj
deps.edn
Justfile