The document provides an overview of the Clojure programming language including its syntax, features, data types, ecosystem, real-world uses, and resources. Some key points covered are that Clojure is a Lisp dialect, supports functional programming paradigms like immutability and concurrency, and is used by many companies in production including Netflix, Groupon, and Go-Jek.

1. Clojure

2. How many zeroes does 100,000 factorial have?
What is Software Transactional Memory
Which programming language came out in 1950-60 and was symbolic (aka
dynamic aka no pointers), had first-class functions and closures, garbage
collection ?
What is tail call optimization a.k.a tail recursion ?
If functional programming is so great, why doesn't everyone use it ? (see next
page for answer)

3. (((lambda f: (((f)((lambda f: ((lambda z: (((f)(((f)(((f)(((f)(((f)
(z)))))))))))))))))))((((((lambda y: ((lambda F: (((F)((lambda x:
(((((((y)(y)))(F)))(x)))))))))))((lambda y: ((lambda F: (((F)((lambda x:
(((((((y)(y)))(F)))(x)))))))))))))((lambda f: ((lambda n: ((((((((((((
lambda n: (((((n)((lambda _: ((lambda t: ((lambda f: (((f)((lambda void:
(void)))))))))))))((lambda t: ((lambda f: (((t)((lambda void: (void)))))
))))))))((((((lambda n: ((lambda m: (((((m)((lambda n: ((lambda f:
((lambda z: (((((((n) ((lambda g: ((lambda h: (((h)(((g)(f)))))))))))
((lambda u: (z)))))((lambda u: (u)))))))))))))(n))))))) (n)))((lambda f:
((lambda z: (z)))))))))((lambda _: ((((lambda n: (((((n) ((lambda _: ((
lambda t: ((lambda f: (((f)((lambda void: (void))))))))))))) ((lambda t:
((lambda f: (((t)((lambda void: (void))))))))))))) ((((((lambda n:
((lambda m: (((((m)((lambda n: ((lambda f: ((lambda z: (((((((n) ((lambda
g: ((lambda h: (((h)(((g)(f)))))))))))((lambda u: (z)))))((lambda u:
(u)))))))))))))(n)))))))((lambda f: ((lambda z: (z)))))))(n)))))))))
((lambda _: ((lambda t: ((lambda f: (((f)((lambda void: (void)))))))))))
))((lambda _: ((lambda f: ((lambda z: (((f)(z)))))))))))((lambda _: (((
(((lambda n: ((lambda m: ((lambda f: ((lambda z: (((((m)(((n)(f)))))(z)
))))))))))(n)))(((f) ((((((lambda n: ((lambda m: (((((m)((lambda n:
((lambda f: ((lambda z: (((((((n) ((lambda g: ((lambda h: (((h)(((g)(f)
))))))))))((lambda u: (z)))))((lambda u: (u)))))))))))))(n)))))))(n)))
((lambda f: ((lambda z: (((f) (z))))))))))))))))))))))))(lambda x:x+1)(0)

5. LISP Concepts
Syntax ? What syntax ?
atoms, forms, & eval
recursion, accumulators, tail-recursion
functions
macros

6. Language features
Immutability
Concurrency, STM
Java Interop
Functional support (map, reduce, comp, partial)
Multimethods
Metadata, Protocols, Namespaces

7. Data types
Syntax ? What syntax ? Oh wait …
scalars [1, 1.0, a, "a", 22/7, 1.00000000N, 1.00000000M]
lists, vectors, maps, sets
Var, ref atoms, agents
Sequences
deftype, defrecord, defstruct

8. Clojure ecosystem

9. Clojure in the Real World
Apache Storm, Datomic, Cascalog, Incanter
Clojure in Real Companies
Clojure at Netflix deck (yes,there's a Hystrix wrapper)
Clojure at Groupon deck
Case Study
Go-Jek Driver Dispatch rewrite - Video Also see

10. Further Reading
LISP 1.5 Manual
http://www.clojurenewbieguide.com/
http://mishadoff.com/blog/clojure-design-patterns/
https://www.quora.com/Whos-using-Clojure-in-production
https://dev.clojure.org/display/community/Clojure+Success+Stories
Companies using clojure link

11. Resources
Official site : https://clojure.org/
https://clojuredocs.org/clojure.core/update-in
https://www.clojure-toolbox.com/
https://www.4clojure.com/problem/53#prob-title
Community
https://www.meetup.com/Bangalore-Clojure-User-Group/