Beyond Functors, All the Way to Monads

Understanding Applicative Functors and Monads through TypeScript

Feb 07, 2026

Why Do We Feel Some Code Is Easier to Read?

Developer Intuition, Code Readability, and Neuroscience

Jan 30, 2026

Why Do Type Systems Behave Like Proofs?

From seeing type checks as compiler hurdles to reading type systems as logic

Jan 25, 2026

From State to Relationships: The Declarative Overlay Pattern

Linear information flow and cognitive load redistribution, learned through overlay-kit

Oct 07, 2025

Misconceptions About Declarative Programming

It's not syntax — it's a shift in thinking that produces truly declarative code

Sep 07, 2025

What Is Abstraction, Really?

More important than implementation: the essence of abstraction that developers should think about

Jan 15, 2023

[All About tsconfig] Compiler options / Emit

Oct 30, 2021

[Everything About tsconfig] Compiler Options / Modules

Aug 22, 2021

[Everything About tsconfig] Compiler Options / Type Checking

Aug 08, 2021

[Everything About tsconfig] Root Fields

Jul 30, 2021

Why You Can't Parse HTML with Regex

Backtracking and Automata: Why Regular Expressions Can't Understand HTML

May 07, 2021

How SVG Doughnut Charts Work — A Trigonometric Approach

The elegant intersection of math and code: building doughnut charts with animation

Dec 12, 2020

Designing Extensible Components with TypeScript

Flexible React component design using generics and type inference

Nov 28, 2020

Why we need to know about CORS?

Navigating the Cross-Origin Minefield: What Every Developer Needs to Know

Oct 06, 2020

How Do You Actually Use Regex?

A journey of finding order in irregular data

Sep 15, 2020

Finding Patterns in Irregularity: A Guide to Regular Expressions

The art of defining patterns in infinite possibility

Aug 10, 2020

Migrating from Hexo to Gatsby

A Small Feature Turned into a Full Blog Migration… An Unexpected Journey of Migration

May 15, 2020

RESTful APIs: Where Frontend Meets Backend

Understanding the philosophy of REST — between representation and action

Apr 07, 2020

HTTP Status Codes: The Server's Way of Talking Back

The small numbers that keep the internet in order

Mar 15, 2020

How Can We Safely Compose Functions?

Functors and monads: the magic that solves the problems ruining function composition

Jan 27, 2020

How to Keep State from Changing – Immutability

Programming that protects state: the meaning and value of immutability

Jan 05, 2020

Pure Functions – A Programming Paradigm Rooted in Mathematics

Pure functions: the power to make complex code simple

Dec 29, 2019

Functional Thinking – Breaking Free from Old Mental Models

From imperative to declarative: how to shift the way you think about programming

Dec 15, 2019

Sharing the Network Nicely: TCP's Congestion Control

How TCP adjusts window sizes to keep the network in harmony

Nov 26, 2019

TCP's Flow Control and Error Control

How TCP delivers packets safely — a guide to flow control and error control

Nov 22, 2019

How TCP Creates and Terminates Connections: The Handshake

How does TCP guarantee reliable connections?

Nov 17, 2019

What Information Is Stored in TCP's Header?

From packet switching to checksums — everything about the TCP header

Nov 10, 2019

Simplifying Complex Problems with Math

Think math is hard? Finding patterns makes problem-solving easier

Oct 30, 2019

[JS Prototypes] Implementing Inheritance with Prototypes

The real way to implement inheritance in JavaScript — everything about the prototype chain

Oct 27, 2019

Beyond Classes: A Complete Guide to JavaScript Prototypes

The real object creation mechanism hidden behind class syntax

Oct 23, 2019

Heaps: Finding Min and Max Values Fast

The magic of O(log n) — fast min/max lookups using heaps

Oct 12, 2019

Why Did HTTP/3 Choose UDP?

The web standard is changing. HTTP/3 picks UDP for speed.

Oct 08, 2019

What Does Synchronous Really Mean?

Clarifying the often-confused concepts of sync, async, blocking, and non-blocking

Sep 19, 2019

Let's Keep Our Commit History Clean

Merge vs. Squash vs. Rebase — when and how to use each

Aug 30, 2019

Object-Oriented Programming Is Actually Fun: A Quick Tour of OOP

Classes, inheritance, polymorphism — let's sort out the core concepts of OOP

Aug 24, 2019

[Making JavaScript Audio Effectors] Creating Your Own Sound with Audio Effectors

Like Logic Pro, Pro Tools? Implementing audio effects on the web

Aug 21, 2019

[Building JavaScript Audio Effectors] Understanding Audio Flow

Audio Effector Development Starting from GainNode

Aug 19, 2019

Efficiently Calculating Averages of Real-Time Data

Average calculation gets slower as data increases? Let's solve it this way!

Aug 11, 2019

Fixing Webpack Watch Memory Leak

How to track memory leaks – Using Chrome DevTools and Heap Snapshots

Aug 08, 2019

Basic Git for Newbies - Version Management

Branches, Merge, Rebase – Essential Git Version Control Concepts

Jul 28, 2019

Basic Git for Newbies - Getting Started

For those who find Git difficult, the easiest first step

Jul 25, 2019

Do Developers Need to Be Good at Math?

Math is just a tool — good developers grow through logic

Jul 17, 2019

Is the Randomness Your Computer Creates Actually Random?

Mid-Square Method, Linear Congruential Method, Mersenne Twister — the secrets behind random number generation algorithms

Jul 14, 2019

How Do Computers Hear Sound?

Understanding digital audio conversion through sampling, bit rate, and Web Audio API

Jul 10, 2019

Implementing PWA in One Day

Service Workers, Web Push, Caching – PWA Implementation Struggle Story

Jul 06, 2019

How Does the V8 Engine Execute My Code?

From bytecode to optimized compilation: a look inside V8's execution pipeline

Jun 28, 2019

Diving Deep into Hash Tables with JavaScript

From hash functions to collision resolution and table resizing

Jun 25, 2019

The Path from My Home to Google

Let's look inside the internet we use daily

Jun 22, 2019

JavaScript's let, const, and the TDZ

Digging into the V8 engine to understand how JavaScript variables really work

Jun 18, 2019

Simply Applying HTTP/2 with AWS

Advantages of HTTP/2 and How to Easily Enable It on AWS

Jun 13, 2019

Client-Side Rendering Optimization

Rendering Optimization Strategies to Improve SEO and User Experience

Jun 03, 2019

Building a Simple Artificial Neural Network with TypeScript

Directly Implementing Neurons, Layers, and Backpropagation in ANN

Feb 26, 2019

Everything About Sorting Algorithms (Bubble, Selection, Insertion, Merge, Quick)

Understanding sorting algorithm principles and time complexity analysis

Oct 13, 2018

Vue Server Side Rendering

Vue SSR Rendering Process and Practical Construction, Operation Experience

Sep 25, 2018

What is Universal Server Side Rendering?

Rendering Technique Capturing Both SEO Optimization and Performance

Sep 25, 2018

[Deep Learning Series] Understanding Backpropagation

The Process by Which Neural Networks Adjust Values to Reduce Errors

Jul 19, 2018

[Deep Learning Series] What is Deep Learning?

History of Neural Networks and the Starting Point of Modern Deep Learning

Jul 17, 2018

Using PayPal's Express Checkout RESTful API

How to Implement PayPal Payment Integration?

May 14, 2017

[Implementing Gravity with JavaScript] 2. Coding

Gravity Simulation Applying the Law of Universal Gravitation

May 06, 2017

[Implementing Gravity with JavaScript] 1. What is Gravity?

How Does Gravity Bend Space?

May 06, 2017

[Simulating Celestial Bodies with JavaScript] Implementing Planetary Motion

Implementing a celestial simulation using Kepler's equation

May 03, 2017

[Simulating Celestial Bodies with JavaScript] Understanding the Keplerian Elements

A guide to Keplerian orbital elements — no astronomy or math expertise required

May 03, 2017