Anuj Jha’s Post

O in SOLID stands for Open/Closed Principle (OCP). It states that each class should be open to extending functionality but closed for modifications in existing functionalities. EXAMPLE OF OCP: If we need to write a function GetArea, we might need to use it for more shapes in the future. By keeping this in mind, instead of writing GetArea(Circle circle), we should write it as GetArea(IShape shape) where IShape is in an interface having GetArea() as a member and each shape class should extend to this interface implementing GetArea() with respective calculation logic. When we need to get the area of any shape, we will use pass IShape as a parameter, and upon execution, it will check which shape it is. With this, we will be able to add as many shapes as we want in the future. This will make the code extendable easily by modifying the current implementation leasing us to implement Open to extend and closed for modifications OCP. EXAMPLE OF OCP VIOLATION: We write the function GetArea(Circle circle), passing a circle to it. Now if we need to get the area of Triangle or Square, we cannot do this in the current implementation and we will have to create a new function GetArea(Triangle tri) due to which the existing implementation was not able to extend and is modified which breaches the OCP rule. HOW OCP IS HELPFUL: The OCP helps to prevent unintended side effects that can occur when modifying existing code. By keeping existing code closed for modification, we reduce the risk of introducing bugs or breaking existing functionality when extending the system. #SOLID #Programming

The Open/Closed Principle (OCP) states that software entities (classes, modules) should be open for extension but closed for modification. This means that we should be able to extend the behavior of a class without directly modifying its existing code. How to achieve OCP: * Abstraction: Use abstract classes or interfaces to define a contract for behavior. * Polymorphism: Utilize polymorphism to allow for different implementations of the contract. Example: Imagine you have a shape interface with a method to calculate area. You can create different classes (e.g., Circle, Rectangle, Triangle) that implement this interface. To add a new shape (e.g., Square), you simply create a new class that implements the interface, without modifying any existing code. Benefits of OCP: * Reduced risk of introducing bugs: Modifying existing code increases the risk of introducing unintended side effects. * Improved maintainability: Makes it easier to add new features and adapt to changing requirements. * Increased flexibility: Allows for easier integration of new components and libraries. #programming #SOLID #OCP #softwaredevelopment #designprinciples

💥 Embracing SOLID Principles ➡ S - Single Responsibility Principle (SRP): Each class should have one responsibility, and it should be fully encapsulated within the class. This modularity enhances code maintainability and readability. ➡ O - Open/Closed Principle (OCP): Classes, modules, and functions should be open for extension but closed for modification. This approach encourages the use of interfaces and abstract classes, making future enhancements possible without altering existing code. ➡ L - Liskov Substitution Principle (LSP): Subtypes should be interchangeable with their base types without altering the program's correctness. This guarantees that derived classes can seamlessly replace their base classes. ➡ I - Interface Segregation Principle (ISP): Clients should not be forced to depend on interfaces they don’t use. Creating specific, client-tailored interfaces avoids unnecessary dependencies and keeps the code clean and efficient. ➡ D - Dependency Inversion Principle (DIP): High-level modules should not depend on low-level modules; both should rely on abstractions. By doing so, the flexibility and maintainability of the software are significantly improved. ♻️ If you find these principles insightful, share them! #SOLID #SoftwareEngineering #CleanCode #BestPractices #CodeQuality #Programming #SoftwareDevelopment #SoftwareArchitecture #DesignPatterns

🔹 Day 5 of 10: Open/Closed Principle (OCP) “Software should be open for extension but closed for modification.” The Open/Closed Principle encourages developers to design systems that can adapt to new requirements without altering existing code. This minimizes the risk of introducing bugs and makes codebases more stable and scalable. How to apply OCP: • Use abstractions (interfaces, abstract classes) to define behavior. • Add new functionality through extensions rather than modifying the core. • Leverage patterns like Strategy, Decorator, or Plugins. 🔑 Tip for today: Next time you add a feature, check if it can be done through extension instead of modifying existing code. What design pattern do you use most often to stay true to OCP? Let’s chat below! Stay tuned for Day 6 tomorrow: Dependency Inversion Principle (DIP). #SoftwareEngineering #CleanCode #OpenClosedPrinciple #CodingBestPractices #DevLife #SoftwareDesign #EngineeringPrinciples #ProgrammingTips #CodeQuality #TechGrowth

💡 Master the SOLID Principles for Cleaner Code 💡 🔑 S - Single Responsibility Principle (SRP) ✅ A class should have only one responsibility and reason to change. Helps in creating focused, manageable code. 🔑 O - Open/Closed Principle (OCP) ✅ Classes should be open for extension but closed for modification. New functionality can be added without changing existing code. 🔑 L - Liskov Substitution Principle (LSP) ✅ Objects of a subclass should be interchangeable with objects of the superclass without affecting the program's behavior. 🔑 I - Interface Segregation Principle (ISP) ✅ Clients should not be forced to implement unnecessary methods. Break down large interfaces into smaller, specific ones. 🔑 D - Dependency Inversion Principle (DIP) ✅ High-level modules should not depend on low-level modules. Both should depend on abstractions, not concrete implementations. 🚀 Why Follow SOLID? ✔️ Better Maintainability – Easily update and extend your code. ✔️ Code Reusability – Write code that can be reused across projects. ✔️ Scalability – Code grows with your project without breaking. ✔️ Easier Testing – Fewer dependencies, more testable components. 💬 How do you apply SOLID principles in your projects? Share your thoughts below! #SOLID #CleanCode #SoftwareDevelopment #OOP #TechTips #SoftwareArchitecture

Some of the most common Design Principles in system design are: ➡️ SOLID principles (SRP, OCP, LSP, ISP, DIP) ➡️ Separation of Concerns ➡️ Encapsulation and Abstraction ➡️ Inversion of control ➡️ You Aren’t Gonna Need It (YAGNI) ➡️ Keep it simple, stupid principle (KISS) ➡️ Loose Coupling and High Cohesion principles ➡️ Resilience to Fault Tolerance principle On the other hand some common Design Patterns: in the Gangs of Four (GOF) collection, we find: ✅ singleton  ✅ factory ✅ builder ✅ prototype ✅ adapter ✅ proxy ✅ strategy ✅ interator ...etc divided into three categories: creational, structural and behavioral beyond these listed in GOF there are some famous design patterns: ✅ Repository pattern ✅ Dependency injection ...etc the design patterns for a developer are like a toolkit for common coding problems in software design. mastering them allowing you to solve all sorts of problems using principles of object oriented design by providing well-tested, proven development paradigms. #designpatterns #desingprinciples #solid #yagni #softwaredevelopment #softwareengineering #codingcommunity

SOLIDify Your Code with 5 Principles Anyone can write bad code but, better software design needs better ethics. As developers strive for clean, maintainable, and scalable code. That's where SOLID principles shine. ✅ S - Single Responsibility Principle (SRP): One class, one job. ✅ O - Open/Closed Principle (OCP): Extend, don't modify. ✅ L - Liskov Substitution Principle (LSP): Inheritance done right. ✅ I - Interface Segregation Principle (ISP): Client-specific interfaces. ✅ D - Dependency Inversion Principle (DIP): Decouple, don't hard-code. By applying SOLID principles, you can: 🚀 Improve code readability 🚀 Reduce bugs and technical debt 🚀 Enhance maintainability 🚀 Boost scalability For example: 🟢 SRP: Separate authentication and authorization logic. 🟢 OCP: Use plugins and modules for extensibility. 🟢 LSP: Ensure subclasses honor parent class contracts. 🟢 ISP: Segment interfaces for client-specific needs. 🟢 DIP: Use dependency injection for flexibility. Take your coding skills to the next level! #SOLIDprinciples #SoftwareDesign #Innovation #CleanCode #CodingBestPractices #SoftwareDevelopment #CodingCommunity #DeveloperLife #ProgrammingPrinciples ----- image credit goes to respective owner(s)

I’m happy to share that I’ve obtained a new certification: Software Engineering: Modeling Software Systems using UML from The Hong Kong University of Science and Technology!

I’m happy to share that I’ve obtained a new certification: Software Engineering: Modeling Software Systems using UML from The Hong Kong University of Science and Technology!

💡 **Open/Closed Principle (OCP): Key to Writing Flexible and Maintainable Code** 💻 The **Open/Closed Principle (OCP)** is one of the foundational pillars of SOLID principles in software design. It states that: > "**Software entities (classes, modules, functions, etc.) should be open for extension but closed for modification.**" 🔑 **What does this mean?** - **Open for extension**: You should be able to add new functionality to your software without altering existing code. - **Closed for modification**: Once a class or function is written, it shouldn't be changed. Instead, you should build on top of it. By adhering to OCP, your code becomes more flexible and easier to maintain as your software grows and requirements evolve. 🚀 **Why is it important?** - **Reduces Bugs**: Modifying existing code increases the chance of introducing new bugs. - **Improves Reusability**: You can reuse existing components without changing them. - **Enhances Scalability**: Adding new features becomes simpler and less risky. Mastering the Open/Closed Principle is a step toward writing robust, scalable, and future-proof software. 🌟 #OCP #SoftwareDesign #SOLIDPrinciples #CodingBestPractices #SoftwareDevelopment #Programming #Tech #Developers #CleanCode