Babashka < git < book

Babashka is a native Clojure interpreter for scripting with fast startup. Its main goal is to leverage Clojure in places where you would be using bash otherwise.


#!/usr/bin/env bb

(require '[babashka.curl :as curl])

(defn get-url [url]
  (println "Downloading url:" url)
  (curl/get url))

(defn write-html [file html]
  (println "Writing file:" file)
  (spit file html))

(let [[url file] *command-line-args*]
  (when (or (empty? url) (empty? file))
    (println "Usage: <url> <file>")
    (System/exit 1))
  (write-html file (:body (get-url url))))

What is Clojure?

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

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