The Ultimate
Snippet Library.

Client-Side API Pagination with Link Headers

Implement client-side pagination for APIs by parsing 'Link' HTTP headers (often used for HATEOAS) to navigate through paginated results like 'next', 'prev', 'first', and 'last' pages.

Simple Rate Limiter for Outgoing API Requests

Implement a basic rate limiter in Node.js to control the frequency of outgoing API calls, preventing your application from exceeding external service rate limits.

Deleting Duplicate Rows While Keeping One

Efficiently remove duplicate records from your database table, preserving one unique entry based on a chosen ordering, vital for data integrity.

Implementing SQL Pagination with OFFSET and LIMIT

Master efficient data retrieval for web application pagination by fetching specific subsets of records using the OFFSET and LIMIT clauses in SQL.

Performing Upsert (Insert or Update) Operations in SQL

Learn how to perform an "upsert" operation in SQL, which inserts a row if it doesn't exist or updates it if a matching record is found, crucial for data synchronization.

Calculating Running Totals and Cumulative Sums in SQL

Generate running totals or cumulative sums over ordered data in your SQL database using window functions, perfect for trend analysis and financial reporting.

Email Address Validation

Validate email addresses with a robust regular expression in JavaScript to ensure correct format for forms and user input, improving data quality.

URL Validation and Protocol Extraction

Validate full URLs, including protocol and optional path, and extract the protocol using JavaScript regex for link verification and parsing.

Password Strength Validation

Implement a JavaScript regex pattern to validate password strength, ensuring it meets minimum requirements like length, uppercase, lowercase, numbers, and special characters.

Extracting Hex Color Codes

Discover how to efficiently extract all valid hex color codes (3-digit or 6-digit) from any string using JavaScript regular expressions for styling or parsing.

Sanitizing Script Tags from User Input

Prevent basic Cross-Site Scripting (XSS) by removing script tags and their content from user input using a JavaScript regular expression for initial sanitization.

Extracting and Analyzing Web Server Logs

Learn to process web server access logs using `grep` and `awk` to extract common errors, unique IP addresses, and request statistics for debugging.