jank programming language - Clojure/LLVM/C++

The native Clojure dialect with seamless C++ interopjank is Clojure on top of C++. It has C++ interop unlike any other language. Templates, virtual functions, exceptions, overload resolution, and RAII all just work in jank. No boilerplate necessary. Just include your headers and go!jank is a robust Clojure dialect. It offers interactive REPL-driven development powered by a Clang-based C++ JIT compiler.(ns my.app.filesystem (:include "boost/filesystem.hpp") (:refer-global :rename {boost.filesystem.file_size file-size})) (defn file-info [file-path] (try (let [bytes (file-size (cpp/cast std.string file-path))] {:path file-path :size bytes}) (catch boost.filesystem.filesystem_error e {:path file-path :error (.what e)}))) (file-info "/etc/passwd") ; {:path "/etc/passwd", :size 4025} (file-info "/root/.bash_history") ; {:path "/root/.bash_history" ; :error "boost::filesystem::file_size: Permission denied [system:13]: \"/root/.bash_history\""} jank is a full-on Clojure dialect, with C++ interop instead of Java interop. There's a :jank reader conditional for when you need it.jank can include any C++ source, link to any C or C++ library, and it uses the C++ type system. jank even compiles to C++!jank uses Leiningen-based project management and has a rich native build system. It's easy to add C and C++ dependencies to your project.Use your favorite nREPL editor plugin. jank contains an LLVM-based JIT runtime to compile C++ code on the fly.Easy project managementjank's native build system can find your installed native dependencies or build them from source. Adding a new dependency is a one line change.(defproject imgui+glfw "0.1-SNAPSHOT" :dependencies [[org.jank-lang.commons/imgui-glfw-sys "2026.06-6"] [org.jank-lang.commons/imgui-opengl2-sys "2026.06-6"] [org.jank-lang.commons/gl-sys "2026.06-1"]] :plugins [[org.jank-lang/lein-jank "2026.06-2"]] :middleware [leiningen.jank/middleware] :main imgui+glfw.main :profiles {:base {:jank {:target-dir "target/debug" :optimization-level 0}} :release {:jank {:target-dir "target/release" :optimization-level 3}}}) jank is great for game devjank brings functional, immutable data and REPL-driven development to your game development workflow. With jank, you can reach into C++ whenever you want the extra performance. No bridges, no function/type registration, no marshalling, no callbacks.(ns imgui+glfw.main (:include "GLFW/glfw3.h" "imgui.h" "imgui_impl_glfw.h" "imgui_impl_opengl2.h")) (defn -main [] (cpp/glfwInit) (let [window* (cpp/glfwCreateWindow 400 300 "jank" cpp/nullptr cpp/nullptr)] (cpp/glfwMakeContextCurrent window*) (cpp/ImGui.CreateContext) (cpp/ImGui_ImplGlfw_InitForOpenGL window* true) (cpp/ImGui_ImplOpenGL2_Init) (while (cpp/! (cpp/glfwWindowShouldClose window*)) (cpp/glfwPollEvents) (cpp/ImGui_ImplOpenGL2_NewFrame) (cpp/ImGui_ImplGlfw_NewFrame) (cpp/ImGui.NewFrame) (when (cpp/ImGui.Begin "jank") (cpp/ImGui.Text "Hello, jank and imgui!")) (cpp/ImGui.End) (cpp/ImGui.Render) (cpp/ImGui_ImplOpenGL2_RenderDrawData (cpp/ImGui.GetDrawData)) (cpp/glfwSwapBuffers window*)) (cpp/glfwTerminate)))