clojure2.clj

;; eg: symbols in clojure, points to a verb or other values
;; when clojure evaluates a symbol it looks up that symbols meaning

inc

;; refer to symbols without evaluating its meaning
;; ' escapes a expression. Quote anything and get it back exactly
;; the same

'inc

'"foo"

;; LISTS, surrounded by parantheses, LISP stood for LISt Processsing
;; List contain anything numbers, strings and even other lists

'(1 2 3)

'(nil "hi")

'(1 (2 (3 ())))

;; combining symbols an number as list

'(inc 0)

;; Removing the ' evaluates the expression

(inc 0)

;; A sentence in LISP is a list
;; Every list starts with a verb and followed by zero or more objects to act on
;; Parts of list are evaluates left to right
;; Innermost List are evaluates before outer lists

(inc (inc 0))

(+ 1 (- 2 6) (- 6 7))