Miguel Bermudez miguelbermudez

Windows 10 Development Environment for Scala

This is a guide for Scala and Java development on Windows, using Windows Subsystem for Linux, although a bunch of it is applicable to a VirtualBox / Vagrant / Docker subsystem environment. This is not complete, but is intended to be as step by step as possible.

Harden Windows 10

Read the entire Decent Security guide, and follow the instructions, especially:

Set UAC to full
Enable Drive Encryption

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	# This file has been auto-generated by i3-config-wizard(1).
	# It will not be overwritten, so edit it as you like.
	#
	# Should you change your keyboard layout some time, delete
	# this file and re-run i3-config-wizard(1).
	#

	# i3 config file (v4)
	#
	# Please see http://i3wm.org/docs/userguide.html for a complete reference!

	import { createCipheriv, createDecipheriv, randomBytes } from "crypto";

	const ENCRYPTION_KEY: string = process.env.ENCRYPTION_KEY \|\| ""; // Must be 256 bits (32 characters)
	const IV_LENGTH: number = 16; // For AES, this is always 16

	/**
	* Will generate valid encryption keys for use
	* Not used in the code below, but generate one and store it in ENV for your own purposes
	*/
	export function keyGen() {

	// getComponent is a function that returns a promise for a component
	// It will not be called until the first mount
	function asyncComponent(getComponent) {
	return class AsyncComponent extends React.Component {
	static Component = null;
	state = { Component: AsyncComponent.Component };

	componentWillMount() {
	if (!this.state.Component) {
	getComponent().then(Component => {

	import test from 'ava';
	import Rx from 'rxjs/Rx';
	import {createStore} from 'redux';

	test('should be observable', t => {

	const reducer = (state, action) => {
	if (action.type === 'increment') {
	return {...state, counter: state.counter + 1}
	}

	# You will need fswatch installed (available in homebrew and friends)
	# The command below will run tests and wait until fswatch writes something.
	# The --stale flag will only run stale entries, it requires Elixir v1.3.
	fswatch lib/ test/ \| mix test --stale --listen-on-stdin

	; Learn Datalog Today (http://www.learndatalogtoday.org) is a great resource for
	; reading but its interactive query interface is broken. Below is how we can
	; load the same data into a Clojure REPL and play with it using DataScript.
	; After running the code below, many/most/all? of the queries on Learn Datalog
	; Today should be functional.
	;
	; Create a new lein project, add `[datascript "0.15.0"]` to `project.clj`'s
	; `dependencies`, run `lein deps && lein repl` and copy-paste the following in
	; chunks, inspecting the outputs as needed.

	;; Credits:
	;;
	;; * ClojureScript
	;; * Reagent https://reagent-project.github.io/
	;; * Figwheel https://github.com/bhauman/lein-figwheel
	;; * core.async https://clojure.github.io/core.async/
	;; * Christophe Grand's Life implementation http://clj-me.cgrand.net/2011/08/19/conways-game-of-life/

	(ns life.core
	(:require [reagent.core :as r]