OO Principles Flashcards
1
Q
Interfaces
A
Code to an interface rather than to an implementation.
2
Q
Changing a class
A
Each class in your application should have only one reason to change.
3
Q
What are classes all about anyway?
A
Classes are about behavior and functionality.
4
Q
The Open-Closed Principle
A
Classes should be open for extension, but closed for modification (OCP).
5
Q
The DRY principle
A
Avoid duplicate code by abstracting out things that are common and placing them in a single location.
6
Q
The SRP
A
Every object in your system should have a single responsibility, and all the object’s services should be focused on carrying out that single responsibility.
7
Q
The LSP
A
Subclasses should be suitable for their base classes.
8
Q
Encapsulation
A
Encapsulate what varies.
