Why Use Selectors?
- Encapsulation: Selectors encapsulate the logic for accessing and computing derived state, promoting code modularity and maintainability.
- Memoization: Selectors utilize memoization techniques to cache computed values, optimizing performance by preventing unnecessary recalculations.
- Reusability: Selectors can be reused across multiple components, ensuring consistency in data retrieval logic throughout your application.
- Testing: Selectors facilitate easier testing as they separate the concerns of state retrieval from component rendering, allowing for more focused unit tests.
Table of Content
- Using a Simple Selector Function
- Using Reselect Library
Different ways to retrieve specific pieces of state using selectors
In Redux applications, selectors are functions that facilitate the retrieval of specific pieces of state from the Redux store. Selectors play a crucial role in decoupling components from the store’s structure and improving performance by memoizing computed values. Let’s explore two approaches to retrieving specific states using selectors.