Clojure

Clojure is a dynamic programming language that targets the Java Virtual Machine (and the CLR, and JavaScript). It is designed to be a general-purpose language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure is a compiled language - it compiles directly to JVM bytecode, yet remains completely dynamic. Every feature supported by Clojure is supported at runtime. Clojure provides easy access to the Java frameworks, with optional type hints and type inference, to ensure that calls to Java can avoid reflection.

Clojure is a dialect of Lisp, and shares with Lisp the code-as-data philosophy and a powerful macro system. Clojure is predominantly a functional programming language, and features a rich set of immutable, persistent data structures. When mutable state is needed, Clojure offers a software transactional memory system and reactive Agent system that ensure clean, correct, multithreaded designs.

I hope you find Clojure's combination of facilities elegant, powerful, practical and fun to use.

The primary forum for discussing Clojure is the Google Group - please join us!

Rich Hickey

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Latest News:

Clojure 1.3 is released

Clojure 1.3 RC0 is available

Clojure 1.3 beta 3 is available

Clojure 1.3 beta 2 is available

ClojureScript launched

Clojure 1.2.1 is released

New Clojure book: Clojure - Grundlagen, Concurrent Programming, Java (in German)

Clojure 1.2 is released!

Rich and Relevance launch Clojure/core

New Clojure books in progress: Get 35% off any version of Clojure in Action or The Joy of Clojure (print book or ebook) with checkout code "clojure35".

Clojure 1.1 is released!

Video of a talk from QCon on State and Identity

Clojure goes Git!

The book is out! - Programming Clojure by Stuart Halloway. Highly recommended for anyone interested in Clojure.

Clojure turns 1.0!

PeepCode publishes the screencast: Functional Programming with Clojure