Moving from CarrierWave to ActiveStorage in a Rails app

Encoding Categorical Variables in Practice

Context: Many machine learning models require categorical variables to be encoded with numerical values. For instance, using one-hot encoding which creates a binary variable (0/1) for each possible value, e.g., if weather is a categorical variable with…

Introduction to Hashes in Ruby, and in Rails

One of the most fundamental and important types in the Ruby programming language is the Hash. It is a simple and flexible way to store structured values together, and Hashes are used all over the place in Rails application code. There’s not much to it…

Learning Ruby by writing test scripts

Writing automated tests is an important part of being a responsible software developer. But it can be neglected at the start of the journey when learning to program. This is despite the fact that thinking about writing tests can help foster a good analytical…

Learn to code and get a certification from one of the world’s top universities

How to learn how to code online and get certified for that

An intro to HTTP status codes and HTTP methods