Is Object Oriented Still Applicable?

Cloud era do We need OO?

This is q good question. We have a lot scripting framework that can be used to develop sophisticated web. We have low level codes that can help build an app within a minute. We have cloud template to deploy solution in minutes. Do we still need Object Oriented (OO)? The answer is it depends.

  • When you build a game, you might need OO. In example, unity project needs C# scripting with OO.
  • When you build a website, you might need OO. In example, need C# with the MVC (Model View Control)
  • When you build a mobile app, you might need OO. In example, building Xamarin codes.
  • When you build a desktop app, you might need OO. In example, building Windows Form or WPF codes.

So the most answer is YES.

Learning OO in the cloud era

So we back in the square one. What we need to learn in OO especially in the cloud era.

  1. Setup the tools and basic language of C#. We can start to learn OO by setup the SDK, IDE, and many more.
    1. Configuring Visual Studio
    2. Configuring Visual Studio Codes
    3. Understanding Class, Namespace, and Variables
    4. Understanding Method, Parameter, and Library
    5. Understanding Building Process in Visual Studio
    6. Introducing UML class diagram
  2. Abstraction. We discuss the abstraction implementation.
    1. Abstraction concept
    2. Abstraction C# example
  3. Inheritance. The inheritance pillar that helps to make a class reusable
    1. Inheritance concept
    2. Inheritance C# example
  4. Interface. The interface pillar that helps to make a class consistent
    1. Interface concept
    2. Interface C# example
  5. Polymorphism. The pillar that helps to make a class extendable and less changes
    1. Polymorphism concept
    2. Polymorphism C# example
  6. Object oriented analysis and design (OOAD)
    1. Introduction OOAD
    2. OOAD in example
  7. A Pie. Putting it all together. Creating a full project in Visual Studio consoles project
    1. Case Study project: Class Design
    2. Case study project: relationship Design
    3. Case study project: test design
  8. Design patterns. Providing the information about how to create a software with the best design in mind.
    1. Creational pattern examples
    2. Structural pattern examples
    3. Behavioural pattern examples
    4. Refactoring in Visual Studio
  9. SOLID principles. Providing the information to make OO programming more approachable and consistent
    1. Single responsibility principle
    2. Open/Closed principle
    3. Liskov Substitution Principle
    4. Interface Segregation Principle (ISP)
    5. Dependency Inversion Principle
  10. Object oriented in Database Layer
    1. Database API model: ADO.NET
    2. Database ORM Model: Entity Framework
    3. Project Creating Database Layer
  11. Object-oriented in-Service Layer
    1. Web services, JSON and HTTP REST
    2. Project Creating Service Layer
  12. Object oriented in Desktop App
    1. Introducing WPF, Windows Form, and UWP
    2. Project Creating Desktop App.
  13. Object Oriented in web App
    1. Introducing MVC
    2. Project Creating Web App
  14. Object Oriented in Mobile App
    1. Introducing Xamarin and MAUI
    2. Project creating Mobile App

Starting 1 – 9, you can work with any sample or spike codes that shows the concept. In Chapter 10 – 14 you can build a multi-channel application that build the software from end to end.

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