Presentation covers basics of Clojure, why it emerged, same basics of usage and provides information on next steps where to take information.

1. Roman Obukhivskyi
About Clojure

2. Afterword :)

3. You can do everything
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JVM
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CLR
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Javascript

4. How to start
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http://clojure.org/
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http://www.4clojure.com/
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http://leiningen.org/
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http://clojurescriptone.com/

5. http://www.clojure-toolbox.com/

6. Dev environment
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Good
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Emacs
IntelliJ
Kinda geek
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Vim
Sublime Text
Others… (Eclipse, Netbeans…)

7. 3 basic questions
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How?
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What?
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Why?

9. HowTo pattern #1

10. Fun with code (Quick Sort)
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APL: qsort ← {1≥⍴⍵:⍵⋄e←⍵[?⍴⍵]⋄ (∇(⍵<e)/⍵) , ((⍵=e)/⍵) , ∇(⍵>e)/⍵}
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J: quicksort=: (($:@(<#[), (=#[), $:@(>#[)) ({~ ?@#)) ^: (1<#)
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Clojure:
(defn qsort [L]
(if (empty? L)
'()
(let [[pivot & L2] L]
(lazy-cat (qsort (for [y L2 :when (< y pivot)] y))
(list pivot)
(qsort (for [y L2 :when (>= y pivot)] y))))))

13. Some facts
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Typing: dynamic, strong
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(Almost) no syntax (S-expressions)
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Lisp-1
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Persistent data structures
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Laziness
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Less brackets than in Java :)

14. ❖
(list 1 2 3) ‘(1 2 3)
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(vector 1 2 3) [1 2 3]
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(hash-map :a 1 :b 2) {:a 1, :b 2}
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(hash-set 1 2 3) #{1 2 3}

16. ❖
LISP + JVM foundation
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Simplicity - core of the language design
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Best parallelism primitives
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Modular libraries
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Code is data
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DSL

17. Best answers to “Why?”
question
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http://www.infoq.com/presentations/Are-We-There-Yet-Rich
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http://www.youtube.com/watch?v=f84n5oFoZBc
❖
http://www.infoq.com/presentations/Simple-Made-Easy
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http://www.infoq.com/presentations/Value-Values
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http://www.youtube.com/watch?v=ROor6_NGIWU
❖
http://www.infoq.com/presentations/DesignComposition-Performance

18. Bonus: little demo