Evans Library

A developer's writing space.
Not merely on the surface, but a life of exploring and contemplating the essence.

How Do Computers Hear Sound?

In this post, I want to tap into my memories from my former career as a sound engineer and explain some audio theory. But since just explaining theory is boring, I’ll also draw a simple audio waveform using JavaScript’s API based on that audio theory.

Jul 10, 2019

Is Data-Driven Decision Making Really Flawless?

In this post, I want to talk about data-driven decision making. The concept started gaining traction around 2013, riding the wave of the big data hype. Many companies already use it as their go-to decision-making method, and there are plenty of success stories backing it up — so it’s earned a fair amount of credibility.

Jul 04, 2019

Is Data-Driven Decision Making Really Flawless?

What Even Is Agile, Anyway?

In this post, I want to talk about the agile process — one of the many software development methodologies out there. Many organizations have already adopted agile, and the company I work at is no exception.

Jul 02, 2019

How Does the V8 Engine Execute My Code?

In this post, I want to explore how Google’s V8 engine interprets and executes JavaScript. V8 is written in C++, but since C++ isn’t my primary language and the codebase is massive, I won’t be doing an exhaustive analysis. Instead, I’ll try to cross-reference information available on the web with V8’s actual source code.

Jun 28, 2019

Diving Deep into Hash Tables with JavaScript

In this post, I want to cover the hash table — one of the most commonly used data structures. Let’s start by understanding what a hash table is and why we use it.

Jun 25, 2019

Diving Deep into Hash Tables with JavaScript

JavaScript's let, const, and the TDZ

In this post, I want to take a deep dive into the and keywords that were introduced in JavaScript ES6. I’m a bit embarrassed to admit this, but until recently, I believed that and weren’t hoisted. Then, during a conversation with a friend, I learned that and are indeed hoisted — they just use a special mechanism called the TDZ to prevent access before initialization.

Jun 18, 2019

What Makes a Good Developer?

From starting my first job as a developer in 2016 to now in 2019 as I write this, I’ve always wondered: what does it mean to be a good programmer, or a good developer? I thought I’d jot down some thoughts. Back when I first fell in love with programming as a college student, I was a complete techno-optimist. I was hungry for things like researching patterns that fit well with the languages I used, having efficient algorithms become second nature, and creating flexible, extensible designs. The reason I thought this way is simple.

Jun 06, 2019

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

In this post, I want to cover five representative sorting algorithms and provide a rough explanation of Big O notation. First, here are the five sorting algorithms:

Oct 13, 2018

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

[Simulating Celestial Bodies with JavaScript] Implementing Planetary Motion

In this post, continuing from the previous post, I’ll define the actual shape, size, position, and orientation of an orbit and write the code to implement it.

May 03, 2017

[Simulating Celestial Bodies with JavaScript] Implementing Planetary Motion

[Simulating Celestial Bodies with JavaScript] Understanding the Keplerian Elements

In this post, I’ll cover the orbital and position calculations of celestial bodies — the part that gave me the most trouble while developing a solar system simulation. As someone who gave up on math in high school, my goal is to explain things as simply as possible for others who had a similar experience.

May 03, 2017