Articles - Coolhead

Best Delhi Metro App Download: Top 10 Apps for Route Planning, Tickets, and Smart Cards

If you are searching for the best Delhi Metro app download, you probably want one of three things:

Jun 10, 2026 delhi-metro

Draw Japan Flag Using TSL - Threejs Shading language

Learn More about the japanese Flag → https://en.wikipedia.org/wiki/Flag\of\Japan

Dec 19, 2025 threejs

Improve Your Website Web Vitals

Core Web Vitals metrics →

Dec 16, 2025 programming

Understanding npm link and Its Better Alternative in pnpm

If you’ve ever built multiple JavaScript packages that depend on each other, you’ve probably used — or at least heard of — npm link. It’s a handy tool that lets you work on a libra

Oct 26, 2025 javascript

Friends as Mentors - Making Mistakes in adulthood

Irrespective of your age. You will make mistakes. As a serious person, who really regrets when something goes wrong. Like I would have nightmares of my mistakes. This has become an

Oct 7, 2025

Creating Vector Search with TiDB Serverless and Drizzle

Vector Search has become highly popular with RAG Systems. In this blog we will learn how we can use the TiDB serverless library to connect with our Database, create schema in drizz

Sep 29, 2025 vectorsearch

Best PDF Parsers for RAG Applications

Overcoming PDF Hell

Sep 22, 2025 ai

How to add NProgess/Youtube loading bar in tanstack start

Install the library from npm:

Sep 8, 2025 reactjs

The CAP Theorem for Marketing

Cap Theorem

Jul 22, 2025 marketing

Learning Through Pain Points

I remember when i first got into web dev. I realised that i can search my queries and get the answers. But once you are into the rabbit hole of debugging, you do learn a lot and st

Jun 5, 2025 programming-blogs

🏷 How to Build a Custom Badge Web Component with Theme, Size, RTL Support, and Icons

Badges are small UI elements that provide contextual hints, often used to represent statuses, counts, or metadata. In this article, we’ll walk through how to create a modern, custo

May 26, 2025 javascript

System Design: Build your own Calendar

This is about me learning/preparing for System Design while creating an Calendar app. Blog is not written as a tutorial but more like an personal guide.

May 17, 2025

Web Workers vs Service Workers vs Worklets

What are Web Workers?

May 17, 2025 programming

Creating a Performant Rectangle Selection Box with Callbacks Using Web Components

In this article, you'll learn how to create a performant rectangle selection box using web components and JavaScript. The objective is to build an interactive tool that allows user

Feb 7, 2025 javascript

CSS Animation Performance - CheatSheet

Here’s a comprehensive table of CSS properties categorized by their impact on browser rendering performance, specifically focusing on Layout, Paint, and Composite:

Feb 7, 2025 css

10 Exciting Web Trends to Watch in 2025

1. Web GPU

Jan 5, 2025 javascript

Explaining Scoped Context in React with example

React Context is a Global Variable

Dec 21, 2024 javascript

Top 10 Books on Design System that i Read last year

This blog would be helpful for UI/UX designers, product manager, product designers, frontend developers, if you have peer or friends in those roles do share the blog with them. Can

Dec 14, 2024 design-patterns

Explained: Symbol in Javascript with examples

Symbol is a builtin object whose constructor returns a symbol primitive — also called a Symbol value or just a Symbol — that's guaranteed to be unique. Symbols are often used to ad

Nov 30, 2024 javascript

Mixins in typescript

A mixin is an abstract subclass; i.e. a subclass definition that may be applied to different superclasses to create a related family of modified classes.

Nov 30, 2024 javascript

Mental Model For Typescript's Type System

This article is based on my learning from the book Effective Typescript by Dan Vanderkam

Sep 9, 2024 javascript

Data Modeling for Subscription Gateway Services integration like Stripe, and Razorpay with your Sass App

So, You want to create a subscription as a service app. In this article, We are going to create a simple data model for sass app.

Sep 9, 2024 developer

Builder Patter in Rust: Explained with example

Use the Rust Playground, for handson learning: https://play.rustlang.org/

Jul 2, 2024 beginners

File upload on Azure in React

Code Snippet : Azure sdk

Jul 2, 2024 javascript

Unzip files in React App

Code Snippet, using zip.js library:

Jul 2, 2024 javascript

Implementing a Queue in Rust using a Vector

Queues are fundamental data structures in computer science, often used for managing data in a firstin, firstout (FIFO) manner.

Mar 11, 2024 queue

What are monoids in functional programming? Explain with examples in javascript

What is a Monoid?

Feb 13, 2024 javascript

Graph Data Science with Neo4j

In GDS we refer to this process as projecting a graph and refer to the inmemory graph as a graph projection. GDS can hold multiple graph projections at once and they are managed by

Feb 13, 2024 data-science

Building a Bento theme for hashnode

A bit of Nostalgia 🖋️

Feb 2, 2024 javascript

I created an interactive Site for Chandrayaan-3 - Case Study

Here, is the Video of the project:

Dec 29, 2023 reactjs

Notes on Simon Dev's Shader Course

If you like Shader, and would want to learn more about shader, Simon devs course is great.

Dec 28, 2023 javascript

I improved my todo List

TLDR,

Dec 19, 2023

Iterator methods and combinators in Rust

Hey guys, I am learning rust and i create a comprehensive list of iterators in rust. I really do think this would be helpful for you as well.

Dec 5, 2023

10 Microservices that you can build in NodeJS in under 30 minutes

Beginner projects for Nodejs that you can build to showcase your skills. I made this list while learning microservices architecture in Nodejs.

Dec 5, 2023 microservices

Must Know Rust Macros for beginners

Macros are a powerful feature in Rust, and learning to use them effectively can significantly enhance your productivity. Here are some commonly used and helpful macros for Rust beg

Dec 4, 2023 beginners

Difference Between into_iter, iter() and iter_mut() in rust

In Rust, intoiter(), iter(), and itermut() are methods provided by the Iterator trait, and they are used to create iterators over collections. Here's a breakdown of the differences

Nov 24, 2023

Garbage Collector in javascript

In JavaScript, memory management is handled by the JavaScript engine and its runtime environment. One crucial memory management component is the Garbage Collector (GC), which is re

Aug 15, 2023 algorithms

Demystifying JavaScript Terminology

1. Syntax Parser: A Program that reads and determines what it does and if the grammar is valid.

Aug 9, 2023 programming-blogs

Naming Variables in Rust

Here is a table that you follow the naming variables in Rust.

Aug 9, 2023 rust

Preparing For Azure - 204

Hey, I am preparing for Azure 204 Developer Certification. These are the resources that I collected. If you already have other resources, Tips or Guides, please share them with us

Aug 9, 2023 azure

Create Tik-Tok/Youtube Shorts like snap infinite scroll - React

Scroll snap is when you scroll a little and it auto scrolls to the next card in the list. You must have seen this feature on Instagram, youtube shorts and TikTok.

May 23, 2023 css