IntroToRxJS.js

/* 
 * Reactive extensions to Javascript.
 asynchronous data streams
 * Data streams can be created from:
 UI Events
 Http Requests
 File Systems
 Array-like Objects
 Memory/Cache
 Promises
 
 Stream: A sequence of ongoig events ordered in time.
 Emits a value, error, or complete signal.
 -------a-----b----X--c----|-----> time
 
 Observables
 -----------
  used to watch streams and emit functions when a value, error, or completed signal is returned.
  observables can be subscribed to by an observer
  observables will constantly watch streams and update accordingly
  We can interact with data streams as any regular array.
  
  ReactiveX
  A library for composing asynchronous programs by using