Programming Tutorials

Capture Coupon Order Before One Rate Extract Pin coupon order before you extract one rate function. A mixed checkout hides stacking, mutati

Hey DEV. I'm Eli. A year ago I had an idea: protect seniors from the scammers who target them daily. I can't write code. But I can direct AI. Here's

Short answer: a daily scheduled email handler should create one durable job per recipient or bounded batch, then return; workers should send with a st

I started building MAF because I wanted to make AI more reliable and spend less on it. My idea was simple: use a paid claude based model for complex

If an Active Admin interface works but still feels like an internal tool from another decade, replacing the entire admin stack is usually too expensiv

Surviving a 150-Requests-a-Day Free Tier: Caching Patterns for Sports APIs You sign up for a free sports API key, make your first request, and it wor

Building a SaaS product is about much more than creating a few API endpoints and connecting a database. You need an architecture that supports multipl

Liquid syntax error: Variable '{{% raw %}' was not properly terminated with regexp: /\}\}/

Open any two sports betting sites and you will probably see the same price written in two different ways. One shows 2.50, another shows +150, and a th

Let's be honest. There are already too many programming languages. If you want to build websites, you have JavaScript and TypeScript. If you want to

Picture this: you've got fifteen microservices talking to each other. Each one exposes its own REST API, each one has its own JSON with its own naming

Imaginate esto: tenés quince microservicios hablando entre sí. Cada uno expone su API REST, cada uno tiene su propio JSON con sus propias convenciones

Revisit how to list files and folders in Python with pathlib. Check your grasp of .iterdir(), glob patterns, .rglob(), and skipping junk directories.

Fewer dependencies, faster installs, and less third-party code to trust. Every package you install is also a package you have to update, audit and tr

When you compile Rust code, object files are produced along the way. They have the extension .o and contain machine code and data. The linker combines

Originally published on christoph-sens.com. If you work with JSON in Java, you use JSONPath – often without noticing. In Spring tests it sits behind

When preparing reports or organizing project files, you may need to combine several PDFs into a single document. Sometimes you need all the pages from

A Question Nobody Wants to Answer First, an uncomfortable question: how many layers of encryption stand between your agent memory store and

A lot of onchain apps need something to happen on a clock: harvest rewards, rebalance a vault, top up a balance, close an expired position. The usual

Runique is a Django-inspired web framework in Rust that I'm building on my own. Axum, SeaORM, Tera. Version 3.0 just shipped, and I hadn't planned it.