Ma Couella macouella

Polymorphic Associations reversed

It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media

This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.

Default

Powerlevel10k

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

ES6 Defaults / Overrides Pattern

Combine default parameters and destructuring for a compact version of the defaults / overrides pattern.

function foo ({
    bar = 'no',
    baz = 'works!'
  } = {}) {

Reposted from Qiita

For almost a year now, I've been using this "flux" architecture to organize my React applications and to work on other people's projects, and its popularity has grown quite a lot, to the point where it shows up on job listings for React and a lot of people get confused about what it is.

Why I'm tired of using and teaching flux

There are a billion explainations on the internet, so I'll skip explaining the parts. Instead, let's cut to the chase -- the main parts I hate about flux are the Dispatcher and the Store's own updating mechanism.

If you use a setup similar to the examples in facebook/flux, and you use flux.Dispatcher, you probably have this kind of flow:

Table of Contents generated with DocToc

FrontEnd Masters - ES6 notes
Rest Parameters

	<?php

	// SETUP:
	// 1. Customize all the settings (stripe api key, email settings, email text)
	// 2. Put this code somewhere where it's accessible by a URL on your server.
	// 3. Add the URL of that location to the settings at https://manage.stripe.com/#account/webhooks
	// 4. Have fun!

	// set your secret key: remember to change this to your live secret key in production
	// see your keys here https://manage.stripe.com/account

	// default exports
	export default 42;
	export default {};
	export default [];
	export default foo;
	export default function () {}
	export default class {}
	export default function foo () {}
	export default class foo {}

	var fs = require('fs'),
	os = require('os'),
	lineReader = require('line-reader');

	function help(){
	console.log('Usage: node coffee-asset-pipeline-comments.js file1.coffee');
	}

	function compilefile(pathname, outdir){
	var src = '';

	<script charset="utf-8">
	<% if ENV["RAILS_ENV"] == "production" %>
	var script = "/react-app-bundle.js";
	<% else %>
	console.warn("Development mode. Make sure to start 'node devServer.js'");
	var script = "http://" + (location.host \|\| 'localhost').split(':')[0] + ":4000/react-app-bundle.js"
	<% end %>
	document.write('<script src="' + script + '"></' + 'script>');
	</script>