SOLID Principles: A Guide to Clean and Maintainable Code

Overview

This repository is dedicated to understanding and implementing the SOLID principles, which are key guidelines for writing clean, maintainable, and scalable object-oriented code. Each principle addresses specific challenges in software development, aiming to improve flexibility and reduce the risk of code-breaking changes.

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What are the SOLID Principles?

The SOLID principles are five design guidelines introduced by Robert C. Martin (Uncle Bob) to ensure robust software design:

1. S - Single Responsibility Principle (SRP)

   • A class should have one, and only one, reason to change.
   • Goal: Simplify debugging and testing by focusing each class on a single functionality.

2. O - Open/Closed Principle (OCP)

   • Software entities should be open for extension but closed for modification.
   • Goal: Add new features without altering existing code to reduce the risk of introducing bugs.

3. L - Liskov Substitution Principle (LSP)

   • Subtypes must be substitutable for their base types.
   • Goal: Ensure that derived classes extend functionality without breaking the behavior of the parent class.

4. I - Interface Segregation Principle (ISP)

   • A class should not be forced to implement interfaces it doesn’t use.
   • Goal: Avoid bloated interfaces by creating specific ones tailored to client needs.

5. D - Dependency Inversion Principle (DIP)

   • High-level modules should not depend on low-level modules. Both should depend on abstractions.
   • Goal: Decouple components to make them more reusable and easier to modify.

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Repository Structure

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├── README.md                # Overview of the repository
├── SRP/                     # Examples and explanations for SRP
├── OCP/                     # Examples and explanations for OCP
├── LSP/                     # Examples and explanations for LSP
├── ISP/                     # Examples and explanations for ISP
└── DIP/                     # Examples and explanations for DIP