Mastering Derived Tables in Rails
by Hey fellow Rails developers! Ever found yourself wrestling with complex SQL queries that involve aggregations, subqueries, or needing to join against computed results? Today, we’re …
Category: Advanced
Everything you should know about Background Jobs with ActiveJob
by Orchestrating background tasks (or "jobs," as they are often called) is common in web development. Any application that deals with time-consuming operations, such as sending …
The Road To JVM: How To Create A Brainfuck Interpreter
by While studying low-level programming and the fundamentals of computation, I stumbled upon Brainfuck, an esoteric programming language. It has only eight commands and is very …
How to Speed Up Mobile App Development with Expo OTA Updates
by There are a lot of articles out there talking about how great it is to use OTA updates in production, but in this article, I’d …
React Server Components in Expo: A Practical Guide
by I’ve seen a lot of traction towards the development and adoption of React Server Components (RSCs) with new frameworks like React Router and Expo having …
Codeminer42 Hackathon: a lesson on experimentation
On November 23rd, Codeminer42 organized its first Hackathon. The goal was quite simple: to encourage the experimentation of new technologies in problems that are a …
A Day In The Life of a Ruby EnumeratorLet's see what is under the hoods
I spent some time trying to elaborate a good introduction for this post. I wanted to start with a great quote or something like that …
Ruby Enumerators: A Point of View You’ve Never HadWhen and how to use custom Enumerators
The 80-20 rule is empirically observed in many human phenomena and activities and it is no different in programming. By understanding a portion of the …
Integrating Ruby with Rust with FFITransferring numbers, strings and JSON data between Ruby and Rust
by Ruby is a great programming language for productivity, but sometimes you need to develop something that is performant or has a low memory footprint. Rust …
Two’s Complement trick revealed
In my last post I made a promise. We talked about IEEE 754 Standard and some other things. One thing we talked about was Two’s …