> Design Patterns > Observer > Observer Design Pattern In Ruby

Observer Design Pattern In Ruby

Observer design pattern in Ruby to notify all the objects to update themselves when an object state gets changed.

Output

Inside ConcreteObserverA::Update()
State = 1
Inside ConcreteObserverB::Update()
State = 1


Suresh Kumar Srivastava is founder of online learning site coursegalaxy.com and author of popular books C In Depth, Data Structures Through C In Depth. He has 18+ years experience in industry and worked on architecture and design of multiple products. This article Observer Design Pattern In Ruby is from his Design Patterns course.