Clojure

A Lisp hosted on the JVM (and JS via ClojureScript) with a focus on immutability.

When to Use

• Functional Programming on the JVM: Leveraging immutable data structures, pure functions, and the vast Java library ecosystem.
• Data-Driven & Event-Sourced Systems: Processing complex financial, logistics, and transactional data structures effortlessly.
• Full-Stack Clojure / ClojureScript: Sharing code, validation schemas (Malli/Spec), and business models between backend and browser.
• Interactive REPL-Driven Development: Iterating and hot-reloading code live in running production-like JVM processes.

Quick Start

(println "Hello, World!")

(defn square [x]
  (* x x))