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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.

Learn more about State

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.

State in Other Languages

State in Java State in C# State in PHP State in Python State in Ruby State in TypeScript