React useMemo Hook
React useMemo Hook: React‘s useMemo hook is a built-in function that allows you to memoize expensive computations so that they only re-run when necessary. This can be useful in optimizing performance by avoiding unnecessary re-computations. To use useMemo, you first need to create a function that performs the expensive computation you want to memoize. You […]
React useCallback Hook
React‘s useCallback hook is a built-in function that allows you to memoize a function so that it only changes when one of its dependencies changes. This can be useful in optimizing performance by avoiding unnecessary re-renders. To use useCallback, you first need to create a function that you want to memoize. You then pass this […]
React useReducer Hook
React‘s useReducer Hook it is a built-in function that allows you to manage state in functional components using a reducer function. A reducer is a pure function that takes the previous state and an action, and returns the new state. To use useReducer, you first need to create a reducer function that takes the previous state […]
Java Exceptions
Java Exceptions Java Exceptions: In Java, an exception is an event that occurs during the execution of a program that disrupts the normal flow of instructions. An exception can occur for many reasons, such as invalid input, system failure, or other unexpected conditions. When an exception occurs, Java creates an object called an “exception object” […]
useRef Hook
React‘s useRef hook is a built-in function that allows you to create a mutable ref object in functional components. A ref is a way to store a reference to a DOM element or a value that persists across renders, without triggering a re-render. To use useRef, you first need to create a ref object using […]
useContext Hook
React‘s useContext hook is a built-in function that allows you to consume data from a React context in functional components. Context provides a way to pass data through the component tree without having to pass props down manually at every level. To use useContext, you first need to create a context using the React.createContext() function. […]
Java Math
Java Math Java Math: Java Math is a class in the Java programming language that provides a set of built-in mathematical functions and constants that can be used in Java programs. The Math class is included in the java.lang package and provides functions for performing basic arithmetic operations, as well as more advanced mathematical operations […]
React useEffect Hooks
useEffect hook is a built-in function that allows you to perform side effects in functional components. Side effects are anything that happens outside of the component, such as fetching data, updating the document title, or setting up event listeners. The useEffect hook takes a callback function as its first argument, and an array of dependencies […]
React useState Hook
React‘s useState hook is a built-in function that allows you to add state to functional components. Prior to the introduction of hooks, you could only use state in class components. With useState, you can use stateful logic in functional components, which makes them more concise and easier to understand. The useState hook takes an initial […]
Java File Handling
Java File Handling: Java File Handling refers to the process of creating, reading, updating, and deleting files on a computer’s file system using Java programming language. Java provides built-in classes and methods to perform file handling operations, making it easy for developers to manipulate files. To create a new file in Java, you can use […]