hy_world.md

Grab the nteract

wget https://github.com/nteract/nteract/releases/download/v0.0.15/nteract-0.0.15-linux.tar.gz
tar -xvf "nteract-0.0.15-linux.tar.gz"

Install IPython and Hy

sudo pip3 install hy ipython ipykernel
python3 -m ipykernel install --user

Check if Hy is installed

hy --version

Check if Hy is alright

$ hy
(+ 3 4)

If not, install the bleeding edge version of Hy

sudo pip3 install git+https://github.com/hylang/hy

Grab the Hy Kernel for IPython

pip3 install git+https://github.com/Calysto/calysto_hy.git --user
python3 -m calysto_hy install --user

cd to the extracted nteract folder and launch it with the Hy Kernel

nteract --kernel calysto-hy

Type those examples in the nteract

ENTER to break line, SHIFT + ENTER to eval

(defn hello []
	(print "Goodbye world!"))

(hello)

(defn greetings [arg]
	(print (.format "Hi {}!" arg)))

(greetings "Lambda I/O")

(defn add [x y]
	(+ x y))

(add 10 14)

(import [math])

(print math.pi)

(defn fib [n]
	(if (<= n 2) n
    (+ (fib (- n 1)) (fib (- n 2)))))

(fib 10)