The Power of Design Patterns

Understanding Design Patterns

Design patterns are reusable solutions to common software design problems. They help improve code maintainability and scalability.

Common Design Patterns

1. Singleton – Ensures only one instance of a class exists.
2. Factory – Creates objects without exposing the instantiation logic.
3. Observer – Establishes a subscription mechanism between objects.

Example: Singleton Pattern in JavaScript

class Singleton {
  static instance;
  constructor() {
    if (!Singleton.instance) {
      Singleton.instance = this;
    }
    return Singleton.instance;
  }
}

Design patterns are essential for writing clean and efficient code. Start exploring them to enhance your software development skills!