SOLID Principles

SOLID principles are a set of five design principles that help software developers create more maintainable, flexible, and scalable code.

These principles were introduced by Robert C.

Martin in the early 2000s and have since become a cornerstone of object-oriented design.

Single Responsibility Principle

The Single Responsibility Principle (SRP) states that a class should have only one reason to change.

In other words, each class should have a single responsibility or job within the system.

By adhering to this principle, developers can create classes that are focused, easy to understand, and less likely to break when changes are made.

Open/Closed Principle

The Open/Closed Principle (OCP) states that classes should be open for extension but closed for modification.

This means that the behavior of a class should be able to be extended without modifying its source code.

By following this principle, developers can create code that is more easily maintainable and less prone to bugs.

Liskov Substitution Principle

The Liskov Substitution Principle (LSP) states that objects of a superclass should be replaceable with objects of its subclasses without affecting the correctness of the program.

In other words, subclasses should be able to be substituted for their superclass without changing the behavior of the program.

By adhering to this principle, developers can create code that is more modular and flexible.

Interface Segregation Principle

The Interface Segregation Principle (ISP) states that clients should not be forced to depend on interfaces they do not use.

Instead of creating large, monolithic interfaces, developers should create smaller, more focused interfaces that are tailored to the needs of the clients.

By following this principle, developers can create code that is more maintainable and easier to test.

Dependency Inversion Principle

The Dependency Inversion Principle (DIP) states that high-level modules should not depend on low-level modules.

Instead, both should depend on abstractions.

This principle encourages developers to use interfaces or abstract classes to decouple the implementation details of classes, making it easier to change and extend the codebase. In conclusion, SOLID principles provide a set of guidelines for software developers to create code that is more maintainable, flexible, and scalable.

By following these principles, developers can create code that is easier to understand, test, and extend, ultimately leading to a more robust and efficient software system.