Killring - Exceptions and ObserversRick Dillon's Weblog Exceptions and Observers Jun 12, 2016 5 min read Observers are a useful mechanism to set up event flows. They are designed for ‘fan out’ communication, in which multiple objects are notified when a single object changes. Their power lies in their use of composition, allowing observers to be added and removed at runtime as necessary, based on the current state of the applicatio
http://www.betterruby.com/gangs-in-ruby-observer/
