Clojure is a dynamic programming language designed to be general-purpose, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure compiles directly to JVM bytecode. 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.