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S.O.L.I.D Principles

What are SOLID Principles?

SOLID is an acronym first introduced by Martin C. Robert in his 2000 paper Design Principles and Design Patterns.

SOLID stands for:

  • S – Single-Responsibility Principle(SRP)
  • O – Open-Closed Principle(OCP)
  • L – Liskov Substitution Principle(LSP)
  • I – Interface Segregation Principle(ISP)
  • D – Dependency Inversion Principle(DIP)

Why are SOLID Principles important?

SOLID Principles were created to help and prevent systems from becoming rigid, fragile, immobile, complex, and difficult to understand. These principles offer a solution to fundamental architectural problems. Most importantly, the SOLID Principles point us to high-level details that need to be addressed. Sometimes these details can be a bad tightly-coupled inheritance relationship or a class that is taking on too much functionality.

In this course:

This SOLID Principles course has a lesson for each SOLID Principle. We will define each principle and give examples with the help of code or UML Diagrams.

1
S – Single Responsibility Principle
5 minutes
2
O – Open-Closed Principle
5 minutes
3
L – Liskov Substitution Principle
5 minutes
4
I – Interface Segregation Principle
3 minutes
5
D – Dependency Inversion Principle
5 minutes

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Prerequisites
Enrolled: 0 students
Duration: 30 Minutes
Lectures: 5
Level: Intermediate
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