Programming Tutorials

pluck No Rails, temos o pluck, que retorna um array com os valores dos atributos que você selecionou. Doctor.pluck(:id) (0.9ms) SELE

Modern Javascript uses a lot of libraries and processing tools, including NPM, Yarn and Webpack. So when you use React, you need all these tools. Rail

Nine months ago, I introduced Perron, an OSS Rails-based static site generator. 190 commits and 18 releases later, lots of bugfixes and many new featu

Comparison: Python 3.13 vs Ruby 3.3 Performance for Jekyll 5.0 Static Site Generators Static site generators (SSGs) remain a cornerstone of

Stop Pushing to GitHub: How to Test Ruby Gems Locally Very often I find myself writing a piece of code in a Rails app and thinking: "I use

In a head-to-head benchmark of 12 common DevOps scripting tasks, Python 3.13 outperformed Ruby 3.3 by an average of 37% in cold-start execution time,

Most Rails race conditions do not look dramatic at first. They look like normal application code. A request reads a balance, adds a value, and saves

At 2:47 PM on Black Friday 2023, our Ruby on Rails 7.0 e-commerce monolith hit a p99 page load time of 4.2 seconds, crashed 3 payment gateways, and bu

When I first encountered Ruby on Rails back in 2010, it changed my life in ways that are hard to put into words. Meeting a framework sounds like a sma

Very often I find myself sharing a link to my new Rails project on Twitter, Discord, or LinkedIn. But when I paste the link, the preview just shows a

What does an audit-grade risk alert look like six months after the band crossing it describes, when the tenant has renamed itself twice in the interim

Rails is the framework that lets you ship a working CRUD app in a morning and a 4,000-line OrdersController with 14 before_action filters by the end o

I see beginner developers get completely overwhelmed by computer science jargon. You read an article about "Monads," "Polymorphism," or "Immutability,

Code Master Blog: Exercises for the wroclove.rb 2026

Chat-based agents are augmented LLM interfaces with access to a list of predefined tools. RubyLLM Agents are reusable AI assistants implemented as mod

JavaScript errors (either vanilla or with Stimulus controllers) often happen silently in the browser, leaving your users confused about what went wron

Onboarding onto a legacy Ruby on Rails codebase is usually a nightmare. You get dropped into a 10-year-old monolith with zero documentation and

👉 Read the full article. MapView Flyers

Ruby 4.0.3 Released: Critical ERB Deserialization Fix April 21, 2026 Introducing MapView Render beautiful, production-ready maps dire

This article is based on the talk I gave at Tropical on Rails 2026 in São Paulo. If you were there, this is the written version. If you weren't — welc