User:JimTittsler/Clojure-py

Lightning Talk, Kiwi PyCon 2012, Dunedin, New Zealand

Clojure-py

Jim Tittsler <jwt@python.net>

Twitter: @jtittsler

“	A language that doesn't affect the way you think about programming, is not worth knowing.	”
—Alan J. Perlis

Clojure

• Lisp re-imagined (circa 2007)
  • persistent data structures (sequences, maps)
  • concurrency
• functional programming
• JVM
  • symbiotic with platform (and existing libraries)

Clojure

• JVM
• CLR
• Javascript (Clojurescript, Google Closure)
• Clojure-py
• Clojure-lua
• Clojure-scheme (Clojurescript -> Gambit Scheme -> C)

Clojure

(ns hello)
 
(def population {:snakes 10000 :planes 2})
 
(defn greet [n]
  (println "Hello" n))
 
(defn manifest [who]
  (greet who)
  (println (/ (:snakes population)
              (:planes population))
           "snakes per plane"))
 
(manifest "Jim")

Clojure-py

• dynamic virtual machine
• faster startup time
• access Python libraries
  • Numeric, PySide

Clojure-py

• https://github.com/halgari/clojure-py
• https://github.com/halgari/cljvm (compile via rpython)