What is Unidirectional Flow?

Answer

Unidirectional Data Flow (UDF) is a design pattern where data flows in only one direction.

The Cycle

1. State: Flows down from the ViewModel to the UI.
2. Events: Flow up from the UI to the ViewModel (user actions).
3. Mutation: The ViewModel processes the event and updates the State.

Benefits

• Predictability: State is only changed in one place.
• Debuggability: Easy to trace where data changed.
• Testability: UI and Logic are decoupled.

Commonly implemented using `StateFlow` or `LiveData`.