Paul D'Ambra pauldambra

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.

	DROP TABLE IF EXISTS states_raw;
	DROP TABLE IF EXISTS final_states_by_day;
	DROP TABLE IF EXISTS final_states_by_day_mv;

	CREATE TABLE states_raw
	(
	process String,
	state String,
	stateint Int64,
	statevalue Float64,

	drop table z;
	drop table mvz;
	create table z(d Date, u String) Engine=MergeTree partition by tuple() order by tuple();
	CREATE MATERIALIZED VIEW mvz ENGINE = AggregatingMergeTree(d, (d), 8192) as select d, uniqState(u) as us from z group by d
	insert into z select today()-number%571, concat('usr',toString(rand()%664579)) from numbers(100000000);
	optimize table mvz final;
	optimize table z final;

	select (uniqMerge(us)) as unique from mvz group by d order by d;
	571 rows in set. Elapsed: 0.300 sec.

	defmodule Checkout do

	defstruct [
	basket: %{A: 0, B: 0, C: 0, D: 0}
	]

	def scan(checkout, code) do
	new_value = checkout.basket[code] + 1
	%{checkout \| basket: Map.put(checkout.basket, code, new_value)}
	end

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Net.Http;
	using System.Threading;
	using System.Threading.Tasks;
	using System.Web;
	using Umbraco.Core;
	using Umbraco.Web;
	using Umbraco.Web.Models.ContentEditing;

	<!DOCTYPE html>
	<head>
	<script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script>
	<script src="rx.min.js" type="text/javascript"></script>
	<script src="rx.jquery.js" type="text/javascript"></script>
	<script type="text/javascript">

	$(function () {

	var dragTarget = $('#dragTarget')

	// knockout-jquery-ui-widget.js
	// Copyright (c) 2011, Planapple, Inc.
	// License: MIT (http://www.opensource.org/licenses/mit-license.php)
	//
	// Knockout binding for jQuery UI widgets
	//
	// Examples:
	// <input type="submit" value="OK" data-bind='jqueryui: "button"' />
	//
	// Attaches a jQuery UI button widget to this button, with default options.