What’s up, developers? Still playing the basic “Q&A” game with your AI? That’s old news. Today, I’m going to show you a “nuclear weapon” that can revolutionize your programming workflow: the new Output Styles feature in Claude Code. In simple terms, it lets you inject a “soul” into your AI, transforming it from a mere tool into any “character” you desire. Imagine your AI is no longer just a “tool” that mechanically spits out code. It can instantly become a “Senior Architect” to help you untangle legacy code, and the next moment, it’s a “TDD fanatic” guiding you to write the most robust test cases. ...

Claude Code Tamagotchi: Your VSCode Coding Pet and AI Buddy Stop grinding — let a caring little “cat” grow inside your code. Late at night, it’s just you and a blinking cursor. Bugs pop up like whack‑a‑mole, product requirements never end, and line after line, you start to feel more like a machine than a human. What if your editor suddenly came to life — breathing, playful, and opinionated? ...

You’ve heard the rumors: Rust is blazing fast and memory‑safe, but writing backend services feels intimidating. What if it could feel like building with LEGO — intuitive, composable, and fun? Enter Axum, a modern Web framework built by the Tokio team. In this tutorial you’ll: Understand Axum’s core concepts: Router, handlers, extractors Work with path parameters, query parameters, and JSON Add shared state with Arc<Mutex<T>> Install middleware such as structured tracing Step 1: Add dependencies axum = "0.7" tokio = { version = "1", features = ["full"] } Or via CLI: ...

Friend, have you had a night like this? On the screen, the Rust compiler’s scarlet errors grip your project by the throat. Lifetimes, ownership, borrow rules — the guardians you’re usually proud of suddenly feel like a never-ending lecture you just want to shut up. Right when you’re about to give up and smash the keyboard, a word glows in your mind with devilish temptation — unsafe. It feels like a cheat code, a God-mode switch that makes all red squiggles vanish. You wrap those “problematic” lines inside a sacred block, type cargo build… Success! Silence. ...

2025 Indie Dev Frugal Stack: Money-Saving AI Coding + Zero-Cost Web Deploy Ever wanted to build with AI but got sticker shock from pricing? Updated as of 2025-08, this guide shows how to stack free or nearly-free AI tools (DeepSeek R1 0528, Gemini 2.5, Qwen3, and more) and deploy your app to the web for zero cost. Free AI model buffet — start in your browser Open multiple tabs and assemble your own “AI Avengers.” Different models excel at different tasks; combining them gives you coverage from coding to system design. ...

Follow Rexai Programming on WeChat to learn Rust the easy way. Forget the heavy “thread” mental model from your OS class. Today, I’ll show you a delightful trick about Tokio. You think tokio::spawn creates a thread? Nope. It gives you something smarter, lighter, and frankly a little sneaky: the ability to harness massive concurrency at a shockingly low cost. This is one of Rust’s secret weapons in backend development. Ready? Let’s reveal the trick. ...

Your Rust async code is a “liar”—and I’m going to strip its state machine down to the bones. Have you ever written an async function, happily called it, and then… the program just ended with nothing happening? You stare at the screen: Where did my code go? Where’s my println!? Did I just run emptiness? Don’t panic. You’re not alone. Welcome to the world of Rust async, where the first rule is: what you see isn’t necessarily what’s happening. ...

Stop Using substr(): Why It Breaks, What To Use Instead Short answer: avoid substr(). It is deprecated in the standard and may be removed in the future. Prefer slice() in almost all cases (use substring() only when its specific behavior is required). Details and a migration checklist below. Why was substr() deprecated? String exposes three ways to cut text: slice(start, end) substring(start, end) substr(start, length) The first two follow the “start–end” convention. Only substr() takes a length, which makes the mental model inconsistent and increases bugs during quick editing and code reviews. Standards bodies and browser vendors discourage it and have marked it as deprecated. ...

Rust 1.89.0 ships with one historical shift and several quality-of-life upgrades. Before you rush to rustup update stable, here are the headlines: Intel Macs are no longer a first-class target, the compiler now calls out implicit lifetime relationships, and performance folks get new toys on x86. ...

HTML Speculation Rules API: 6 Lines of Code for Instant Page Loads Summary: This comprehensive guide explores the HTML5 Speculation Rules API, demonstrating how 6 lines of HTML code can achieve 90% faster page loads through intelligent prefetching and prerendering. Includes complete Chrome 121+ implementation and cross-browser compatibility solutions. Have you ever experienced that magical moment when clicking a link on a website, and the page appears instantly with zero loading time? It’s like teleportation rather than traditional page navigation. ...