Lecture 8-State pattern

Question 1

What is the intent of the state pattern?

Answer 1

To allow an object to alter its behaviour when its internal state changed.

Question 2

What are the pros of the state pattern?(3)

Answer 2

-SRP: organize the code related to particular states into separate classes.
-Open/Closed principle: introduce new states without changing existing state classes of the context.
-Eliminate bully state machine conditionals.

Question 3

What are the cons of the state pattern?

Answer 3

-If state machine has only a few state or rarely changes–> might be overkill