Online Clojure Compiler Features
Lisp on the JVM
- Experience the elegance of Lisp syntax with access to the entire Java ecosystem using this clojure online editor
- Practice S-expressions, macros, and homoiconicity—code is data, data is code
- Understand why Clojure is popular for data engineering, financial systems, and web backends
- Learn Rich Hickey's philosophy: simplicity through immutability and data-oriented design
Immutable Data Structures
- Test Clojure's persistent data structures—vectors, maps, sets that share structure efficiently
- Practice threading macros (-> and ->>) for readable data transformation pipelines
- Experience structural sharing: copying data structures is cheap and safe
- Perfect for data engineers building ETL pipelines with immutable transformation steps
Interactive Development
- Write Clojure in REPL-driven style—evaluate expressions and build programs incrementally
- Test sequence operations: map, filter, reduce work lazily for memory efficiency
- Practice destructuring to extract nested data elegantly from maps and vectors
- Ideal for prototyping data transformations before deploying to production systems
No JDK or Leiningen Required
- Run Clojure code instantly without installing Java, Clojure, or Leiningen in this clojure playground
- Share Clojure solutions to 4Clojure problems, data transformation patterns, or algorithm implementations
- Great for learning Clojure before building production web apps with Ring/Compojure
- Test macros, multimethods, and functional patterns without local environment setup
Clojure Keyboard Shortcuts
Experience the power of Replit AI
This entire Clojure compiler was built by Replit Agent 3 from a natural language prompt. Replit's environment facilitates rapid development, iteration and testing code for users of any technical ability. Develop software faster and better with Replit’s autonomous AI.
Get started freeFrequently Asked Questions
What Clojure version does this compiler support?
This online clojure compiler uses a recent stable Clojure version on the JVM. You can use modern Clojure features including threading macros, destructuring, lazy sequences, and core library functions. Perfect for learning Clojure fundamentals before building production applications.
Can I use Clojure libraries in this online editor?
External libraries aren't available in this clojure playground, but the entire clojure.core library is fully supported. Focus on core Clojure concepts: immutable data structures, sequence operations, macros, and functional composition. Everything needed to learn Clojure's unique approach to programming.
Is Clojure good for data engineering?
Absolutely! Clojure excels at data transformation with immutable data structures, threading macros, and lazy sequences. This clojure online editor lets you practice ETL patterns. Many companies use Clojure for data pipelines because immutability prevents bugs and makes parallel processing safe.
How does Clojure compare to other Lisps?
Clojure is a modern Lisp with practical focus: runs on JVM, emphasizes immutability, provides persistent data structures, and integrates with Java. Unlike Common Lisp or Scheme, Clojure prioritizes data-oriented programming and concurrency primitives. Test it in this clojure compiler to see Rich Hickey's philosophy in action.
Can I save Clojure code permanently?
Yes! Click Share to generate a permanent URL for your Clojure code. Perfect for sharing solutions to 4Clojure problems, demonstrating functional programming patterns, or building a portfolio of Lisp code. Your Clojure snippet stays accessible indefinitely.
What makes Clojure different from Java?
Clojure is functional with immutable data structures, while Java is object-oriented with mutable objects. Both run on JVM and interoperate seamlessly. This clojure code runner shows how Clojure's concise syntax and functional approach complement Java's ecosystem—many teams use both together.
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