Intro to Clojure 4 Developers

Intro to Clojure 4 Developers

• 1.
  Intro to Clojure Forprogrammers
• 2.
  • a dialectof LISP • Runs on JVM, CLI, Javascript • Functional • Immutable • Designed by Programmers for Programmers Rich Hickey created in 2007 What is it?
• 3.
  Syntax • Keyword ...:a :b • Symbol ... println • String ... "Hi Mom" • Integer ... 42
• 4.
  List All TheThings • Everything is a list with ( ) • (function-name parameter parameter) • (println "hello world") • (+ 1 2)
• 5.
  Data Structures • Vector(collection) • [1 2 3] • Map (hash) • {:a 1 :b 2 :c 3} • Set (unique collection) • #{1 2 3 }
• 6.
  ( ) aren’tthat bad!
• 7.
  nREPL • Sort oflike IRB/Pry for ruby, but better • Built in to Light Table • Add-in for Emacs, Sublime and others
• 8.
  Cool Libraries • OM- Facebook react library • compojure - websites • korma - object relation mapper for databases • play-clj - game library
• 9.
  More Cool Things •quil - a wrapper around Processing for drawing/animation • overtone - playing musical tones • synaptic - neural networks • cascalog - data processing • datomic - query engine built on top of database storage
• 10.
  The tooling
• 11.
  Leiningen for automating Clojure projects withoutsetting your hair on fire 1. Download the lein script (or on Windows lein.bat) 2. Place it on your $PATH where your shell can find it 3. Set it to be executable (chmod a+x ~/bin/lein) 4. Run it (lein) and it will download the self-install package
• 12.
  lein new appmy-stuff $ cd my-stuff $ find . . ./.gitignore ./doc ./doc/intro.md ./LICENSE ./project.clj ./README.md ./resources ./src ./src/my_stuff ./src/my_stuff/core.clj ./test ./test/my_stuff ./test/my_stuff/core_test.clj
• 14.
  • install dependancies leindeps • create projects lein new app my-stuff • start a repl lein repl Oh the things it can do….
• 15.
  Austin ClojureBridge • March13, 14 • Rackspace North Campus • Friday night install fest 6pm-8pm • Saturday workshop 9am-3:30pm • Saturday night after party at Pinballz Arcade • Food/beverages provided by sponsors • Sponsors: Rackspace, DRW, Pragmatic
• 16.
  40% off print, 50%off digital see Nola for code
• 17.
  Live Coding