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What is jank?

Most simply, jank is a Clojure dialect on LLVM with C++ interop. Less simply, jank is a general-purpose programming language which embraces the interactive, functional, value-oriented nature of Clojure and the desire for the native runtime and performance of C++. jank aims to be strongly compatible with Clojure. While Clojure's default host is the JVM and its interop is with Java, jank's host is LLVM and its interop is with C++.

jank is currently in alpha! Look here for details.

Docs

Read the jank book.

Appetizer

; Comments begin with a ;
(println "meow") ; => nil

; All built-in data structures are persistent and immutable.
(def george {:name "George Clooney"}) ; => #'user/george

; Though all data is immutable by default, side effects are adhoc.
(defn say-hi [who]
  (println (str "Hi " (:name who) "!"))
  (assoc who :greeted? true))

; Doesn't change george.
(say-hi george) ; => {:name "George Clooney"
                ;     :greeted? true}

; Many core functions for working with immutable data.
(apply + (distinct [12 8 12 16 8 6])) ; => 42

; Interop with C++ can happen *seamlessly*.
(defn sleep [ms]
  (let [duration (cpp/std.chrono.milliseconds ms)]
    (cpp/std.this_thread.sleep_for duration)))

Sponsors

If you'd like your name, company, or logo here, you can sponsor this project for at least $25/m.

<br/> <p align="center"> <a href="https://www.clojuriststogether.org/"> <img src="https://www.clojuriststogether.org/header-logo.svg" height="100px"> </a> </p> <p align="center"> <a href="https://nubank.com.br/"> <img src="https://upload.wikimedia.org/wikipedia/commons/f/f7/Nubank_logo_2021.svg" height="100px"> </a> </p> <!-- mkarp --> <p align="center"> <a href="https://pitch.com/"> Misha Karpenko </a> </p> <!-- stijlist --> <p align="center"> <a href="http://www.somethingdoneright.net/about"> Bert Muthalaly </a> </p> <!-- modulr-software --> <p align="center"> <a href="https://github.com/modulr-software"> modulr-software </a> </p> <!-- multiplyco --> <p align="center"> <a href="https://multiply.co/"> multiply.co </a> </p> <!-- keychera --> <p align="center"> <a href="https://keychera.github.io/"> keychera </a> </p> <!-- fosskers --> <p align="center"> <a href="https://github.com/fosskers"> Colin Woodbury </a> </p>

In the news

<div align="center">

| <img src="https://i0.wp.com/2023.clojure-conj.org/wp-content/uploads/2019/06/clojure.png?resize=150%2C150&ssl=1" height="100px"><br />_{<b>Clojure Conj 2023</b>}<br /> | <img src="https://user-images.githubusercontent.com/1057635/193151333-449385c2-9ddb-468e-b715-f149d173e310.svg" height="100px"><br />_{<b>The REPL Interview</b>}<br /> | <img src="https://github.com/jank-lang/jank/assets/1057635/72ff097c-578c-46f8-a727-aae6dcf2a82f" width="100px"><br />_{<b>Language Introduction</b>}<br /> | <img src="https://github.com/jank-lang/jank/assets/1057635/9788a7c8-93da-47ea-8d1d-8a258a747942" width="100px"><br />_{<b>Compiler Spotlight</b>}<br /> | | :-----------------------------------------------------------------------------------------------------------------------------------------------------------------: | :-----------------------------------------------------------------------------------------------------------------------------------------------------------------------: | :-: | :-: |

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