The Ultimate
Snippet Library.

Focus an Input Field with useRef

Learn how to use the `useRef` hook in React to directly interact with DOM elements, such as programmatically focusing an input field on component mount or user action.

Implement Global Theming with useContext

Discover how to manage global application themes efficiently using React's `useContext` hook, allowing components to consume theme data without prop drilling and manage state.

Optimize Expensive Calculations with useMemo

Boost React app performance by memoizing the result of computationally intensive functions using the `useMemo` hook, preventing unnecessary re-calculations on re-renders.

Custom Hook for Local Storage Persistence

Learn to build a reusable custom React hook, `useLocalStorage`, to effortlessly synchronize component state with the browser's local storage for persistent data management.

Detect Click Outside an Element with useEffect

Implement a common UI pattern by using the `useEffect` hook to detect clicks outside a specific DOM element, useful for closing dropdowns, modals, or context menus automatically.

Implement a Server-Side API Proxy for CORS & Security

Learn to set up a Node.js/Express proxy to securely fetch data from third-party APIs, bypass CORS restrictions, and protect sensitive API keys on the server.

Secure Webhooks by Verifying Request Signatures

Enhance webhook security by implementing server-side signature verification in Python, ensuring incoming requests are legitimate and haven't been tampered with.

Implement Infinite Scroll Pagination for API Data

Create a seamless user experience by implementing infinite scroll pagination using JavaScript's Fetch API and Intersection Observer to load more data as users scroll.

Fetch Data from GraphQL API using Apollo Client

Integrate GraphQL APIs into your React application using Apollo Client for efficient data fetching, caching, and state management, leveraging hooks for queries.

Implement Leaky Bucket Rate Limiting for API Consumers

Control outgoing API request rates using a Leaky Bucket algorithm with Python's asyncio to prevent hitting external API limits and ensure smooth operations.

Automate Website & Database Backups

Learn to create a robust Bash script for automating website files and MySQL/PostgreSQL database backups, complete with timestamped archives and cleanup.

Monitor and Auto-Restart Web App Process

Create a Bash script to continuously monitor a specific web application process and automatically restart it if it's not running, ensuring service uptime.