State Design Pattern
What is the State Pattern
The State Pattern is a behavioral design pattern that is used when an Object changes its behavior on its internal state.
- Within any unique state a program can behave differently, and a program can be switched from one state to another state instantaneously!
- Remember the Infinite State Machine Problem in my C++ Projects
Example Using Music Player
In the PlayingState Class, which inherits from the MusicPlayerState, there is two functions/methods that can be invoked which are Stop and Pause!
In the StopState Class, you can only use the Play method!! Makes sense, you can’t go from Stop to Pause!