Ivan Hilkov ivan-hilckov

Setup docker to run React app

After setting up docker to generate React app without installing node js in https://gist.github.com/przbadu/4a62a5fc5f117cda1ed5dc5409bd4ac1 It was confusing to some of the devs, how to run react app, so I am creating this as second step to the configuration.

Generate required files in your react project

cd my-react-app
touch Dockerfile Dockerfile.dev docker-compose.yml .dockerignore

Strings

`String.prototype.*`

None of the string methods modify this – they always return fresh strings.

charAt(pos: number): string ^ES1

Returns the character at index pos, as a string (JavaScript does not have a datatype for characters). str[i] is equivalent to str.charAt(i) and more concise (caveat: may not work on old engines).

Cheng Lou - On the Spectrum of Abstraction

Cheng Lou, a former member of the React team, gave an incredible talk at React Europe 2016 entitled "On the Spectrum of Abstraction". That talk is available for viewing here: https://www.youtube.com/watch?v=mVVNJKv9esE

It's only a half-hour, but it is mind-blowing. It's worth re-watching two or three times, to let the ideas sink in.

I just rewatched the talk for some research, and wrote down a summary that's semi-transcript-ish. I didn't see any other transcripts for this talk, other than the auto-generated closed captions, so I wanted to share for reference.

Summary

Here is a script to take the hosts from From http://pgl.yoyo.org/adservers/ and convert them to rules for Little Snitch.

It has options to grab the entire list or grab new entries past a certain date.

Just grab the output and copy/paste into Little Snitch.

The script is written to block access to any process, any port. You can also delete those lines and it will only block Mail. Or use the options to enter any process, port or protocol you want to block.

Enable tab completion for JSX with Emmet in Atom

This guide assumes you have the emmet and language-babel packages already installed in Atom

Open the keymap.cson file by clicking on Atom -> Keymap… in the menu bar
Add these lines of code to your keymap:

'atom-text-editor[data-grammar~="jsx"]:not([mini])':

	let UserContext = React.createContext();

	class App extends React.Component {
	state = {
	user: null,
	setUser: user => {
	this.setState({ user });
	}
	};

	{
	test: /(?<!\.module)\.scss$/,
	use: [
	require.resolve('style-loader'),
	{
	loader: require.resolve('css-loader'),
	options: {
	importLoaders: 1,
	},
	},

	html {
	/* Adjust font size */
	font-size: 100%;
	-webkit-text-size-adjust: 100%;
	/* Font varient */
	font-variant-ligatures: none;
	-webkit-font-variant-ligatures: none;
	/* Smoothing */
	text-rendering: optimizeLegibility;
	-moz-osx-font-smoothing: grayscale;

	#!/usr/bin/env bash

	# http://papers.ch/speeding-up-your-mac-osx-terminal-input/

	#echo "Disable press-and-hold for keys in favor of key repeat"
	#defaults write NSGlobalDomain ApplePressAndHoldEnabled -bool false

	echo "Set a blazingly fast keyboard repeat rate"

	defaults write NSGlobalDomain KeyRepeat -int 0.02