arifinfrds Clean Code, Testing

Speed coding – Unit Testing the MVVM in Swift

https://www.youtube.com/watch?v=eKtWY0962Hg 🎯 Difficulty: Intermediate to Advanced In this speed coding session, we write unit tests for a Swift ViewModel built with the MVVM architecture and powered by Combine and @MainActor concurrency. You’ll see how to: ✅ Write precise and meaningful unit tests using XCTest 🔍 Test async @MainActor functions with Combine’s @Published properties 🧪 Mock … Continue reading Speed coding – Unit Testing the MVVM in Swift

arifinfrds Architecture

Dependency Inversion Principle (DIP) in iOS Swift

The Dependency Inversion Principle (DIP) is a fundamental concept in software development that helps create flexible and maintainable code. In this article, I'll explore its history, the problem of tight coupling, and different approaches to applying DIP in Swift. History of the Dependency Inversion Principle The Dependency Inversion Principle (DIP) was introduced by Robert C. Martin, also known … Continue reading Dependency Inversion Principle (DIP) in iOS Swift

arifinfrds Architecture

Understanding the Liskov Substitution Principle (LSP) in Swift

The Liskov Substitution Principle (LSP) is one of the five SOLID principles of object-oriented design. It states that: "Objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.” (Paraphrased from Barbara Liskov’s) Barbara Liskov, a pioneering computer scientist, introduced this principle in 1987 as part of her research … Continue reading Understanding the Liskov Substitution Principle (LSP) in Swift

arifinfrds Architecture, Design Pattern

Open/Closed Principle (OCP) in Swift using Decorator Pattern

SOLID: Open Close Principle Overview The Open/Closed Principle (OCP) is one of the fundamental principles of object-oriented design, forming part of the SOLID principles. The concept is simple: “Software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification.” This principle encourages building systems where new functionality can be added without altering existing code. This leads to … Continue reading Open/Closed Principle (OCP) in Swift using Decorator Pattern

arifinfrds Architecture

Clean Architecture: A Blueprint for Scalable and Maintainable Software

Clean Architecture is a software design philosophy that helps developers build flexible, maintainable, testable, and scalable applications. It emphasizes separation of concerns, ensuring that different parts of the application have clear responsibilities and do not mix unrelated logic. Think of it like designing a beautiful city with a well-planned infrastructure—roads, districts, utilities, and zoning regulations all working together efficiently. A well-architected city makes … Continue reading Clean Architecture: A Blueprint for Scalable and Maintainable Software