How to Set Up DuckDB (Run SQL on a CSV With No Import Step)
By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you will be running SQL directly against a CSV file on your mach…
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Building a Verification Pipeline for AI-Assisted Math Solutions
Mathematics assistants are useful when they reduce the mechanical burden of a problem without hiding the reasoning. They can transcribe an equation…
The Essence of Technology Is Not Code — It's Solving Problems. Forcing Them to Be the Same Is a Bias.
For those chasing lines of code while forgetting the problem itself. I. A Striking Scene Let me start with something that actually happened around m…
Smart Home Garden Irrigation Project
Garden Irrigation System Summary MY project to make a bespoke irrigation system for my home garden, which comes in at under £10 per zone including t…
16 Posts, Started Commenting, then got the Shield
I joined DEV in June and started doing what I have been avoiding for a long time. Now and then, I hit the publish button and closed the DEV window t…
my first post on this! hello!
hi my name is robert! i never really had a blogpost or anything like this before but i'd like to use this to meet some cool people and share my expe…
I'm 12. My "Bug Report" article just beat my "Viral Origin Story" (and other funny things that happened today)
Two days ago, I posted my origin story: "I'm 12. I don't have a laptop. I built a full-stack AI SaaS on my Android phone." It went viral. I felt lik…
Practice Linux, Docker and kubectl in Your Browser, No VM Required
Reading about chmod is not the same as typing it. Everyone who learned the terminal knows this, and everyone who teaches it says the same thing: you…
Front-end Integrative Project – Animalia
Animalia This is an initial academic project that I am developing with the purpose of helping and providing greater knowledge about the local fauna…
Understanding the Git Workflow: Working Directory, Staging, Commit and Push
Git or GitHub was just another buzzword that for so long I used to associate it with the so called "tech bros and siz". As a result, I never got qui…
JavaScript Event Loop: How Does JavaScript Handle Multiple Tasks?
JavaScript is often called single-threaded . That means it has one main thread and can execute one piece of JavaScript at a time . So here is the ob…
Javascript If-else Statement
The JavaScript if-else statement is used to execute the code whether condition is true or false. There are three forms of if statement in JavaScript…
Database Performance for Developers: Indexing, Query Plans, and the Queries That Don't Scale
How database indexes actually work: B-trees, selectivity, composite indexes, covering indexes, and reading EXPLAIN plans so your queries scale past…
I Ran a Real SEO Audit On My Own Live Site — Here's a Free SEO Audit Report Sample
I Ran a Real SEO Audit On My Own Live Site — Here's a Free SEO Audit Report Sample Four days ago, my site was invisible to Google. Not slow. Not pen…
Lists in Python for Beginners
A List can be considered as a dynamic array. It is denoted by [ ]. The values inside a list are called elements . The values in a list can be homoge…
Building My First AI Project: What Went Right and What Went Wrong
After learning different concepts in Computer Science and AI, I wanted to build something that was more than just another college assignment. That i…
Why Developers Should Care About SEO Before Launching a Website
I have worked in digital marketing for more than 16 years, and one thing I have learned is that many SEO problems are created before an SEO speciali…
Objects in JavaScript
Introduction Due to the dynamic nature of javascript creating an object is as simple as the code below. var myObject = {}; the code above creates an…
Compression, Minification & HTTP: The Complete Guide to Making the Web Smaller
What is Compression? Compression means reducing the size of data by encoding it using fewer bits (0s and 1s) . In simple words: Compression reduces…
The Node.js Event Loop, Explained Simply (with Examples)
"Node.js is single-threaded" — you've heard it a hundred times. So how does it handle thousands of requests at once without freezing? The answer is…
A safer Windows slowdown triage: 30 minutes before you reinstall
When a Windows machine becomes slow, reinstalling the operating system is often treated as the first move. It should usually be much later in the pr…
Where to Find Free Datasets to Practice With (And How to Pick One)
By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you will have a shortlist of places that hold millions of free d…
How to Export SQL Results to CSV and Excel (Without Wrecking the Data)
By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you will export a query result and open it with the leading zero…
Excel Tables vs Ranges: What Ctrl+T Actually Changes
By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you can turn a list into a real Excel table, write formulas that…
Multi-stage builds in Docker: smaller, cleaner images
There's a particular kind of waste that happens in Docker images and that everyone accepts as normal until someone points it out: shipping the compi…
Primitive data types in javascript
PRIMITIVE DATA TYPES IN JAVASCRIPT JavaScript has seven primitive data types: String, Number, BigInt, Boolean, Undefined, Null, and Symbol.Primitive…
10 Git Commands You’ll Wish You Knew Earlier
Do you know Git? Of course you do! Today, I’ve got a few of my favorite Git commands for you. When I was a junior developer, my tech lead…
Wireshark for Beginners:How to Capture and Analyze Network Traffic
Wireshark is an open-source network protocol analyzer that allows security professionals, system administrators, and cybersecurity learners to captu…
Why the Future Always Looks Like It Has More Time
Bro, I think the reason we keep telling ourselves, “I'll start coding when I get into college” , is because the future looks ridiculously attractive…
Cloud Computing for Beginners: Multi-Cloud, Community Cloud & AWS
Cloud Computing for Beginners: Multi-Cloud, Community Cloud & AWS Cloud computing has changed how organizations build, deploy, and scale applica…