What are some common design patterns in Ruby?

What are some common design patterns in Ruby?

Some common design patterns in Ruby include Singleton, Observer, Factory, and Decorator. Would you like to know more about any specific one?

Can you explain the Singleton pattern?

Sure! The Singleton pattern ensures that a class has only one instance and provides a global point of access to it. In Ruby, you can implement it using class variables and methods.

How do I implement the Factory pattern in Ruby?

To implement the Factory pattern, you create a method that returns instances of different classes based on input parameters. This encapsulates the instantiation logic.

What about the Observer pattern?

The Observer pattern allows an object to notify other objects about changes in its state. In Ruby, you can use the 'observer' module to implement this easily.