Søren Høyer sorenhoyer

The introduction to Reactive Programming you've been missing

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.

	/**
	* This is a Live Query polyfill, as graphql-js does not strictly have support for that. Instead, we leave it up to the
	* client to recognize a Live Query is requested with the `@live` directive on a `query` operation and here we
	* transform it into a `live` subscription instead.
	*
	* Consider a schema like the following:
	*
	* ```graphql
	type Badge {
	id: ID!

	'use strict'

	var sqlite = require('sqlite3').verbose();
	var db = new sqlite.Database('test_db');

	db.getAsync = function (sql) {
	var that = this;
	return new Promise(function (resolve, reject) {
	that.get(sql, function (err, row) {
	if (err)

	import React from "react";
	import ReactDOM from "react-dom";

	import configureStore from "./store/configureStore";


	const store = configureStore();


	const rootEl = document.getElementById("root");

	// stream.ts - A TypeScript module for FRP.
	// - https://gist.github.com/hisui/6261547
	// - tsc stream.ts -t es5 --sourcemap --noImplicitAny
	module sf {

	export class Packet<T> {

	constructor(private _flags:number, private _value:any=void 0) {}

	static next<A>(e:A):Packet<A> {