Depend on Abstractions not Concretions (Framework)

I made this simple framework to explain why and how we should "depend on abstractions and not on concretions". It's a quadrant diagram where the two dimensions captures the principles "program to interfaces, not implementations" and "dependency injection". 💚 BUY MY BOOK: https://leanpub.com/the-object-oriented-way/ 🏛️ https://geni.us/IBhtLnh (Clean Architecture) 🧠 https://geni.us/CpLx2y (Agile Principles, Patterns, and Practices) 🌟 https://geni.us/zzlx (Dependency Injection: Principles, Practices, and Patterns) 00:00 Intro 00:14 Overview 00:41 The diagram 02:41 Concretion + Instantiation 05:34 Dependency Injection (Concretion + Injection) 06:36 Program to interfaces (Abstraction + Instantiation) 09:22 Combining both (Abstraction + Injection) 10:01 Book recommendations 10:39 Depend on abstractions (Abstraction + Injection) Watch next: https://youtu.be/TkUhAbbRCAE