Coder wize: A Guide to Software Development Excellence

Understanding State and Props in React Native Functional Components React Native, the popular framework for building mobile applications, allows developers to build both functional and class-based components. In this blog, we will be discussing the concepts of state and props in functional components. States in React Native refers to the data or variables that determine a component's behavior and render dynamic content. It is an object that holds the current values of a component and can be updated by the component itself. The state is managed by the component and can be accessed and updated using the  useState  hook. const [name, setName] = useState("test user") In the example above, we are using the  useState  hook to create a state variable called  name  with an initial value of "test user". The hook returns an array with two elements - the current state value and a function to update the state value. In this case, we are destructuring the array to two v...

How to Use useCallback to Improve React Native Performance Memoizing a callback function is made possible by the useCallback hook in React. This indicates that the callback will only be recreated if one of the passed hook dependencies has changed. Performance optimization can benefit from this, particularly when passing callback props to child components. You must pass two arguments to the useCallback hook in order to use it: the callback function and a list of its dependencies. If any of the dependencies have changed, The hook will return a new callback function that will only be recreated if any of the dependencies have changed.. For example: const myCallback = useCallback(() => {   // Do something  }, [dependency1, dependency2]); After that, you can pass myCallback to a child component as a prop. Only if either dependency1 or dependency2 changes will the child component re-render. Keep in mind that the dependency array should not contain any props or state variables...