Reducer Orientation

This document provides an overview of reducers in the context of state management.

Reducers are pure functions that take the current state and an action as input, and return a new state as output. They are fundamental to managing changes in application state efficiently and predictably.

• Pure Functions: Reducers must be pure functions, meaning they always produce the same output for the same input and have no side effects.
• State as Input: The reducer takes the current state of the application as its first argument.
• Action as Input: The reducer also takes an action object as its second argument. Actions describe what happened in the application, such as a button click or data retrieval.
• New State Output: The reducer returns a new state object based on the current state and the received action.

Reducers enable a predictable and centralized way to manage state changes in applications. By following these principles, developers can build robust and maintainable applications.