Curated development tutorials from top sources. Filter by language.
Por @zejuniortdr em Mai 12, 2026 Metaprogramação é a arte de escrever código que gera ou manipula outro código. Se você vem do Python, prov
Everything will work In application development, and probably in every IT field, almost any tool will get you to a working result. Any tool
I spent a while building a local web UI that drives the real claude CLI through one coding task at a time — plan, a human approval gate, then implemen
The first time I saw a class written inside another class, I thought it was a typo. Then I saw new Comparator() { ... } with curly braces right after
Most backend bottlenecks don’t happen because of poor hardware. They happen because of unindexed database queries, sloppy async error handling, and t
When I started learning Spring, I noticed something about many of the tutorials I found. They often showed how to use a feature, but not always why i
Most backend bugs don't happen because of logic. They happen because TypeScript met a PostgreSQL response, nodded politely, and lied. We've all been
Nobody who sponsors creators calls them creators when they go looking. They type "influencer". The people being sponsored, in my experience of reading
A one-person UK company selling a subscription to someone in Germany owes German VAT on that sale from the first euro. There is no threshold to hide u
The old system stores one phone number in users.phone. The new requirement is a list of numbers per user. Replacing a JSON string with an array is eas
Most Go HTTP services end up with the same problem: authentication logic scattered across handlers, rate limiting bolted on as an afterthought, and no
FA Java application can have clean architecture, efficient business logic, and well-designed REST APIs, yet still perform poorly because of inefficien
I use feature flags in my stack on a daily basis. I've used them for gradual rollout and fast roll back. But I've never been completely happy with how
Our repo describes OpenAmer as having "an A2A Global Mesh where every instance talks to every other instance." Claims like that are cheap. So this pos
The DJ Calendar has about 1,000 pages of structured data: artist pages, tour dates, venues and FAQs. For a while, Google flagged hundreds of Rich Resu
Learn Java Set in just a few minutes! 🚀 Understand unique values, simple Java examples, and how Sets can help with GenAI data processing. Jav
Introduction Java Set is a collection that stores unique elements. It does not allow duplicate values. Sets are useful when we need to sto
If you've pointed an AI agent at a live incident, you've seen the failure mode: it invents a plausible-sounding metric, queries it, gets an empty resu
TL;DR: a production stack moved off Caddy and php-fpm onto FrankenPHP running under Laravel Octane's worker mode, cutting the framework's full per-req
MUSIC import org.openqa.selenium.Alert; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; i