State in Swift
State is a behavioral design pattern that allows an object to change the behavior when its internal state changes.
The pattern extracts state-related behaviors into separate state classes and forces original object to delegate the work to an instance of these classes, instead of acting on its own.
Usage of the pattern in Swift
Usage examples: The State pattern is commonly used in Swift to convert massive
switch-base state machines into the objects.
Identification: State pattern can be recognized by methods that change their behavior depending on the objects’ state, controlled externally.