State Pattern – Design Patterns (ep 17)
28:46
Null Object Pattern – Design Patterns (ep 18)
1:37:25
Iterator Pattern – Design Patterns (ep 16)
10:55
An introduction to finite state machines and the state pattern for game development
19:14
The State Design Pattern in Python Explained
11:51
5 Design Patterns Every Engineer Should Know
27:21
Factory Method Pattern – Design Patterns (ep 4)
49:47
Observer Pattern – Design Patterns (ep 2)
1:20:01