SOLID

Question 1

How do you spot DIP violations?

Answer 1

Does class depend on concrete objects?
Are you instantiating a concrete object in the constructor?

Question 2

What technique does the DIP often use to fix issues?

Answer 2

Dependency injection

Question 3

What is dependency injection?

Answer 3

In software engineering, dependency injection is a programming technique in which an object or function receives other objects or functions that it requires, as opposed to creating them internally.

Question 4

What are the main benefits to the DIP?

Answer 4

Protect code by making it independent of elements that are fragile/unstable(concretions)
Components are loosely coupled (open to extention, closed for modification)
Testing is easy

Question 5

What does it mean to depend on details

Answer 5

To depend on concrete objects. Owning an instance of a class

Question 6

What are common problems associated with breaking the DIP?

Answer 6

Depending too much on concrete objects

Question 7

How to we fix DIP violations?

Answer 7

We want to implement abstractions/interfaces in between classes that depend on concretions.