useState vs useReducer in React
What is useState? useState is a React Hook that allows functional components to create and manage state. Before Hooks were introduced, state could onl…
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10 API and Database Blunders Every Beginner Makes (and How to Fix Them Before Production Bites Back)
You wrote your first REST endpoint. You ran your first SELECT * . Things worked. Life was good. Then a colleague casually mentioned "idempotency key,"…
10 Things I Learned in My First Week of Learning HTML and CSS
10 Things I Learned in My First Week of Learning HTML and CSS A week ago, I opened my code editor with excitement and a little fear. I had heard that …
The First Message Sent Over the Internet Was 'LO'
The first message ever sent across the network that became the internet was not "Hello, world." It was not a grand declaration. It was two letters, tr…
Most beginners misuse these Git branch commands: main, checkout -b, switch -c, and push -u explained
Why these Git commands confuse so many beginners A lot of developers use these commands from memory: git branch -M main git checkout -b feature/inicia…
Mastering Concurrency with the Sleeping Barber Problem
Mastering Concurrency with the Sleeping Barber Problem Hey there, fellow coder! Today, we're diving into one of the most fascinating concepts in compu…
The Math Behind O(log n): Binary Search, log , and Why Halving Wins
You have read O(log n) a hundred times. Binary search is O(log n) . A balanced BST lookup is O(log n) . Heap insert is O(log n) . We nod along — log n…
CSS box-shadow: The Complete Guide to Multi-Layer Shadows
The box-shadow property is one of the most underused tools in CSS. Most developers use it for a single subtle drop shadow and stop there — but the ful…
Swift Break, Continue and Infinite Loops — Taking Control of Your Loops 🎮
So far our loops have run from start to finish without interruption. But sometimes you need more control — skip certain items, stop early when you've …
Day 23 of Leaning MERN Stack
Hello Dev Community! 👋 It is officially Day 23 of my journey to master the MERN stack! Today, I wrapped up Lecture 8 of Apna College's JavaScript play…
Day-04 : Understanding int in C: Binary, Ranges, and What Happens When You Overflow
What I Learned Today (Week-01/Day-04) Fundamental Data Types -> int Decimal and Binary Number System Types of int and their ranges Edge cases in th…
Database Management Systems for Beginners: Learn SQL, Tables, Queries, and Data Design.
I often see beginners struggle with databases because most resources either jump straight into SQL syntax or spend too much time on theory. Over the p…
22 Day of Learning MERN Stack
Hello Dev Community! 👋 It is officially Day 22 of my journey toward mastering the MERN stack! After learning how to create and style elements dynamica…
Why I chose to build instead of grind Leetcode — and what happened
I'm 18. BTech CS student in India. Everyone around me is grinding Leetcode, preparing for placement season, optimizing for offer letters. I made a dif…
Mastering Encapsulation in Java
Introduction Object-Oriented Programming (OOP) is built on four core principles: Encapsulation Inheritance Polymorphism Abstraction In this article, w…
I Built Bit Flip to Make Coding Interview Practice Simpler
TLDR: I'm introducing Bit Flip, a newsletter where you get coding questions and interview questions asked by tech companies delivered to your inbox da…
RAG (Retrieval-Augmented Generation) Explained for Beginners: Build AI Applications Using Your Own Data
Introduction Large Language Models (LLMs) such as ChatGPT, Gemini, and Claude are incredibly powerful. They can answer questions, generate code, summa…
Linux Fundamentals for Data Engineering
Introduction As a data engineer, most of your work will happen on Linux servers. Whether you are managing databases, running data pipelines, or proces…
Weekly Dev Log 2026-W09
🗓️ This Week Completed the SwiftUI app development tutorial and tested the app I built on a real iPhone🦾 Learned the overall flow of building an iOS a…
EOL, EOS, LTS, CVE — Every Software Lifecycle Term, Explained Like You're New Here
The short version: every piece of software has a date after which its maker stops fixing it — including security holes. That date is its end of life (…
Deploying Symfony 8 to cPanel Step by Step guide.
Table of Contents Introduction Double-check everything Configure your Environment Variables Install/Update your Vendors Clear your Symfony Cache Insta…
Hello IT World! Why I’m "Learning in Public" at sandycodesdev 🚀
Hey guys! 👋 My name is Sandeepa (but you can call me Sandy). I’m a third-year software engineering undergraduate student at SLIIT. If you are reading …
Low-Level System Design (LLD) in Java: A Beginner's Guide
Introduction When preparing for software engineering interviews, many developers focus heavily on Data Structures and Algorithms. However, as you move…
Color Contrast Failures: The Number One Accessibility Issue and How to Fix It
Color contrast failures are the single most common accessibility issue on the web. The WebAIM Million study found them on 83.6% of home pages tested. …
Swift Loops — while, repeat and Knowing When to Use Each 🔄
In our last article we covered for loops — perfect for when you know exactly how many times you need to repeat something. But what happens when you do…
🚀 AWS VPC Project: Build a Production-Ready Architecture with EC2, ALB, ASG & Bastion Host
In the previous articles, we learned about: VPC subnets Internet Gateway Route Tables Security Groups Network ACLs DNS and Route 53 Until now, we have…
🚀 Looking for a Partner to Build ONYX With Me
Hello everyone, I am currently building ONYX, my own programming language and runtime ecosystem. The project is around 70% complete, and I am looking …
C# 14: The `field` Keyword — Cleaner Properties, Zero Boilerplate
C# 14: The field Keyword — Cleaner Properties, Zero Boilerplate Every C# developer has been there. You start with a clean auto-property, then requirem…
Regular Expressions: The Guide I Always Wanted (2026)
Regular Expressions: The Guide I Always Wanted (2026) Regex looks like gibberish until it clicks — then it's a superpower. Here's the guide that makes…
Web Security Basics: Every Developer Must Know (2026)
Web Security Basics: Every Developer Must Know (2026) Security isn't just for security teams. Every developer who writes code that touches the interne…