Apply SOLID to Simplify and Strengthen Your Code
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SOLID isn’t just a list of principles it’s the blueprint behind every scalable, maintainable, and testable software architecture. Yet most developers only grasp it at the surface level. This course breaks own each principle with real-world Swift examples, visual clarity, and use cases that transform how you design and structure your code. You won’t just memorize rules you’ll walk away knowing why each principle exists, how to apply it confidently, and how to architect
By the end, you won’t just “know SOLID” you’ll be applying it instinctively, building systems that are stable under change and elegant under pressure
Course Syllabus
Introduction to SOLID
Single Responsibility Principle
Open/Closed Principle
Liskov Substitution Principle
Interface Segregation Principle
Dependency Inversion Principle
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What You’ll Learn
Introduction to SOLID: Get an end-to-end understanding of what SOLID really is and why it’s the foundation of clean architecture. Learn how these five principles eliminate code rot, reduce coupling, and future-proof your projects.
OCP: Open/Closed Principle: Stop rewriting code start extending it. You’ll understand how to design flexible systems that are open for extension but closed for modification, using protocols, generics, and dependency inversion
ISP: Interface Segregation Principle: One size does not fit all. Learn how to split large protocols into smaller, role-specific ones so your code stays focused, composable, and easy to mock or replace
SRP: Single Responsibility Principle: Unlock true modularity. Learn how to design types that do one thing well and how this principle impacts reusability, testing, and long-term maintainability more than anything else
LSP: Liskov Substitution Principle: Master safe inheritance. Learn how to create subclasses that behave predictably, and how to avoid common violations that break polymorphism and crash your app in edge cases.
DI: Dependency Inversion Principle: Invert your thinking, elevate your architecture. Learn how to decouple high-level logic from low-level details using protocols, constructor injection, and service locators making your code more testable, scalable, and clean.