Design patterns Interview Question
Comprehensive source of knowledge for interviews Design patterns.
Introduction to Design Patterns
Design patterns are reusable sample solutions to common problems in software development such as code duplication, reusable patterns, redundant functions, etc. They are similar to blueprints that can be customized to solve any problem. The concept was first described by Christopher Alexander and later published by four authors - Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm - commonly known as the Gang of Four in the book Design Patterns: Elements of Reusable Object-Oriented Software in 1994.
Design Patterns teach developers how to solve recurring problems without spending too much time and effort while developing solutions for them. Therefore, the need for software developers to know these patterns has increased a lot.