When building applications in React Native, there are times when you need to perform certain actions in response to changes in your component or when it first appears on the screen. For example, you may want to fetch data from an API, set up event listeners, or update the title of your screen dynamically. These kinds of actions are known as side effects because they happen alongside rendering and do not directly return UI elements.

React provides a powerful hook called useEffect to handle side effects in functional components