whirlwind-clojure.clj

whirlwind-clojure.clj

; clojure has all the basic datatypes - string, double, float, boolean
; it also has symbols, keywords, and nil instead of Java's null

; a symbol (an identifier that usually refers to something else
'test

; a keyword (generally used in maps and for "enum" like values)
:foo

; Data Structures

; vector (sequential, add new values at end)
[1 2 3]
  
; list (clojure code is made up of lists, sequential
'(1 2 3)

; map (hash map)
{:foo bar :test 123}

; set
#{1 2 3}

; functions (it's a list!)

; general form
(defn function [arg arg arg ...]
  ...)

(function arg arg arg)

(defn add-2 [other]
  (+ 2 other))

(add-2 3) ; => 5