Qing Wu wiserfirst

The introduction to Reactive Programming you've been missing

So you're curious in learning this new thing called Reactive Programming, particularly its variant comprising of Rx, Bacon.js, RAC, and others.

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

	# Update, upgrade and install development tools:
	apt-get update
	apt-get -y upgrade
	apt-get -y install build-essential
	apt-get -y install git-core

	# Install rbenv
	git clone git://github.com/sstephenson/rbenv.git /usr/local/rbenv

	# Add rbenv to the path:

	class Api::BaseController < ActionController::Base
	protect_from_forgery with: :null_session

	before_action :authenticate, :except => [:preflight_check]
	after_action :cors_set_access_control_headers

	def preflight_check
	if request.method == 'OPTIONS'
	render :text => '', :content_type => 'text/plain'
	end

	#!/usr/bin/env ruby
	require 'rubygems'
	require 'mp4info'

	path = ARGV[0]

	Dir.foreach(path) do \|file\|

	file_path = File.join path, file