Clojure is a compiled language, 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 dynamic development environment where you interact with your program while you write it, growing and adding to it while it’s running. To work with Clojure you need an editor that supports evaluation in source files and structural editing (working with nested forms in addition to character editing).
Integers are read as fixed precision 64-bit integers when they are in range and arbitrary precision otherwise. A trailing N can be used to force arbitrary precision. Clojure also supports the Java syntax for octal (prefix 0), hexadecimal (prefix 0x) and arbitrary radix (prefix base, then r, e.g. 2r for binary) integers. Ratios are provided as their own type combining a numerator and denominator.
Clojure (the language) is provided as a Java ARchive (JAR) file, available in the Maven Central Repository, a public repository for JVM-based artifacts. If needed, you can find more detailed version information on the Releases page.
Clojure is a functional programming language. It provides the tools to avoid mutable state, provides functions as first-class objects, and emphasizes recursive iteration instead of side-effect based looping. Clojure is impure, in that it doesn’t force your program to be referentially transparent, and doesn’t strive for 'provable' programs. The philosophy behind Clojure is that most parts ...
Learn Clojure Welcome to Clojure! This guide is a gentle introduction to the basics of Clojure and links out to other references and resources if you want more detail. These pages are intended to be read in order and may build upon material from prior pages. Each page has a few exercises provided at the bottom of the page.