Regis Boudinot selfup

The students will need to learn a scripting language that can help them organize bash scripts.

Ruby has an excellent backtick api to execute shell commands.

In pry:

puts `echo "hello from ruby"`

Iterators

What is the difference between forEach and map in JS?

forEach:

const arr = [1, 2, 3];

const eachExample = () => arr.forEach(e => e);

	<!DOCTYPE html>
	<html>
	<head>
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
	</head>
	<body>
	<h1>My First Heading</h1>
	<p>My first paragraph.</p>

	<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>

	class Rubux
	attr_reader :state

	def initialize(state = {}, actions = {})
	@state = state
	@actions = actions
	end

	def dispatch(key, value)
	return @state = @state.merge(@actions[key].(state, value)) if @actions[key]

	class Node {
	constructor(data = null, next_node = null) {
	this.data = data;
	this.next_node = next_node;
	}
	}

	class List {
	constructor() {
	this.head = new Node();

	// here we import 'html' instead of just 'h'
	import { html } from 'hyperapp';

	// now we use the 'html`` template tag literal
	const view = (model, msg) => (html`
	<div class="counter">
	<h1>Welcome to the hyperapp-one boilerplate!</h1>
	<p><em>With JSX</em></p>
	<hr class="line-break" />
	<section>

	class EmailField extends Component {
	constructor() {
	super();
	this.state = {
	email: '',
	};
	}

	handleClick = (e) => {
	this.props.dispatch('SOMETHING', { email: e.target.innerText }):

	macro_rules! actions({
	$( $action: expr => $function: expr ), + } => {{
	let mut store = ::std::collections::HashMap::new();
	$(store.insert($action as &str, $function as Box<Fn(&str)>);) + store
	}};
	);

	fn main() {
	let actions = actions!{
	"foo" => Box::new(\|arg: &str\| println!("foo {}", arg)),

	fn cluster(trimmed: i64) {
	let range: Vec<i64> = (0..trimmed + 1).collect();
	range.par_iter()
	.map(\|i\| thread::spawn(move \|\| run(i.to_le())))
	.map(\|runner\| runner.join());
	}

	const express = require('express')
	const cors = require('cors')
	const bodyParser = require('body-parser')
	const app = express()

	app.use(bodyParser.urlencoded({ extended: true }))

	app.use(cors())

	app.post('/dev_log', function (req, res, next) {