Onel Harrison

Watch: Exploring Binary Trees (Part 2) — Braata 1 — Haskell

Deserializing a preorder string-encoded binary tree.

What’s the difference between SQL and MySQL?

Learn the difference between these two popular technologies and the way they are talked about in industry…

How to recursively reverse a linked list

An intuition-building approach

Student Enrollment SQL Challenge

How many questions can you answer?

Onel’s 2018 Year In Review 🌟

Highlights from 2018

Stability in Sorting Algorithms — A Treatment of Equality

Algorithms are at the heart of computer science. Algorithms used for sorting are some of the most fundamental, useful, and consequently…

Python: One Problem, Several Lessons

I’m sharing my experience and knowledge of writing code with a friend who has begun learning to code. I recently used a single problem to…

RoboReflections #1: Into to Robotics and the Robot Operating System

Note: This is part of the “RoboRefelections” series capturing my experience learning about Robotics through the ColumbiaX Artificial…

Machine Learning Basics with the K-Nearest Neighbors Algorithm

The k-nearest neighbors (KNN) algorithm is a simple, easy-to-implement supervised machine learning algorithm that can be used to solve both…

Checking strings for patterns in JavaScript

Write code deliberately, and pick the right tool for the job

JavaScript for loops and the differences among them

To maintain fluency in any language, whether it’s a spoken language or a computer programming language, you have to continuously learn…

JavaScript’s Call and Apply

A simple heuristic for remembering how to use call and apply

No More Surprises: Going Deep with JavaScript

Learn how to stop being surprised by your code

Misleading Intuitions: Defining Private Class Methods in Ruby

Beware your gut! It’s only ever right some of the time.

Lessons Learned About Data Analytics In An Intro Session At General Assembly

Data Analytics and Data Science are two hotly discussed topics on the inter-webs these days. I’ve been interested in them as professional…

Reflections of a CODE2040 Fellow — Asking for Help

I came to San Francisco as a CODE2040 Fellow to intern at Must Win, LLC as a Software Engineer for the summer. I was excited to explore a…