Clojure

Clojure is a dialect of the Lisp programming language. Clojure is dynamic, compiled , and a general-purpose functional language. It is also a scripting language with an infrastructure for multi-thread programming. The language is modular and reusable, and was used by different companies like Walmart, Chartbeat, and 8th Light

• on Windows:

  First of all, the Java programming language must be already installed on your system. You also have to set the JAVA_HOME variable. Then, do the following:

  1. Open PowerShell and write the following command: Set-ExecutionPolicy RemoteSigned -Scope CurrentUser
  2.  Now type in the following command: Invoke-Expression (New-Object System.Net.WebClient).DownloadString('https://download.clojure.org/install/win-install-1.10.3.1029.ps1')
  3. The previous command will download and run the installer. When it is running, you will be prompted to select the location of the installation. You can type 1 to select the first option. 
  4. You can check your installation using PowerShell  and the following command: clj


• on ubuntu :

  As for Windows 10, you must have Java already installed on your system. And have either the JAVA_HOME variable set, or have the java command in your path. Then open the terminal, and  : 

  1. Run the following command: sudo apt update
  
  
  2. Install the dependencies.
     • To Install Java, you can follow the instructions available in this post.
     • Install curl using this command: . sudo apt install curl
     • You can also install rlwrap by the following command: sudo apt install rlwrap
  
  
  3. To download and run the installer, run the following commands: curl -O https://download.clojure.org/install/linux-install-1.10.3.1029.sh
     chmod +x linux-install-1.10.3.1029.sh 
     sudo ./linux-install-1.10.3.1029.sh
  
  
  4. To check your installation, just run this command: clj --version
  
  
  5. You can delete the linux-install file after the installation was successful: rm linux-install-1.10.3.1029.sh

   

Just follow the next steps:

1. Create a new file named hello.clj and save it in the Home folder.
2. Write and save the following code in the “hello.clj” file:
   Copy Code
   (ns hello
     (:gen-class))
   
   (defn helloWorld []
     (println "Hello World!"))
     
   (helloWorld)
   
3. Open the terminal from the Home folder and run the following command: clj -M hello.clj

If you want to add something about the language or about this post, please feel free to do it by commenting below 🙂 .