Juan Picado juanpicado

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

Shallow

Real unit test (isolation, no children render)

Simple shallow

Calls:

constructor
render

React && Firebase Workshop

Contact Information

@stevekinney

Prequisite Setup

A recent version of Node.js
npm install -g create-react-app

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

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

Spurred by recent events (https://news.ycombinator.com/item?id=8244700), this is a quick set of jotted-down thoughts about the state of "Semantic" Versioning, and why we should be fighting the good fight against it.

For a long time in the history of software, version numbers indicated the relative progress and change in a given piece of software. A major release (1.x.x) was major, a minor release (x.1.x) was minor, and a patch release was just a small patch. You could evaluate a given piece of software by name + version, and get a feeling for how far away version 2.0.1 was from version 2.8.0.

But Semantic Versioning (henceforth, SemVer), as specified at http://semver.org/, changes this to prioritize a mechanistic understanding of a codebase over a human one. Any "breaking" change to the software must be accompanied with a new major version number. It's alright for robots, but bad for us.

SemVer tries to compress a huge amount of information — the nature of the change, the percentage of users that wil

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	{
	"version": "0.2.0",
	"configurations": [
	{
	"name": "Example",
	"type": "node",
	"request": "launch",
	"runtimeExecutable": "node",
	"runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"],

	'use strict';

	// The purpose of this example is to show
	// how you can block the event loop with JavaScript.
	// There is 3 routes
	// / respond with Hello, World text
	// /block uses JavaScript while for 5 seconds
	// /non-block uses setTimeout for 5 seconds

	// Do the following

	launchctl unload /Library/LaunchAgents/org.macosforge.xquartz.startx.plist
	sudo launchctl unload /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist
	sudo rm -rf /opt/X11* /Library/Launch/org.macosforge.xquartz. /Applications/Utilities/XQuartz.app /etc/paths.d/XQuartz
	sudo pkgutil --forget org.macosforge.xquartz.pkg

	# Log out and log in