Some basic Clojure commands

clojureplay.clj

; Install Clojure 
;   brew install clojure

; Install Leiningen
;   brew install leiningen

; Now, on your command line, do a 
;   lein repl
; from any folder to invoke an interactive environment

; Try out the following commands!
; Do a simple calculation
(+ 1 2)
(+ 1 2 3)

; Secret Java
(class "Hey")
(class 7)

; Collections
'(1 2 3) ; linked list
[1 2 3]  ; extends from a Java array
(class '(1 2 3))
(class [1 2 3])

; Create a list with values 0 to n-1
(range 5)
(take 3 (range 5))

; Create a lazily evaluated list
(range)
(take 3 (range))

; Assign a value
(def heyThere "Hey there!")

; Use a Java method
(.toUpperCase heyThere)

; Define a function
(defn helloWorld [] "Hello world")

; Define an overloaded function
(defn helloWorld2
	([] "Hello world")
	([name] (str "Hello " name))
)

; Define an atom
(def myAtom (atom 3))

;Check the value
@myAtom

; Update the value
(swap! myAtom + 1)

; Tell me moar!
; The graphics library you can use to make pretty images onscreen
; https://github.com/quil/quil

; Really! Actually great Clojure documentation, with *examples*. Community built.
; https://clojuredocs.org/

; Simple exercises to help you through understanding the language
; https://www.4clojure.com/

; If you want to look at the typespeed game implementation
; https://bitbucket.org/nali/pl/src/4dc6b2e05c7f/typespeed/?at=master