Linux

441 entries match these filters

• 0013 pytest pytest is the de facto standard test runner for Python: plain functions with assert, detailed failure reports, fixtures, parametrization and a large… Any system Repo Testing 15 Oct 2026
• 0022 Build a small Node.js CLI with util.parseArgs A complete, dependency-free command-line tool in Node: options and flags with parseArgs, input from files or a pipe, help text, and meaningful… Intermediate · Step by step · Any system Script Node.js 15 Oct 2026
• 0018 Promises and async/await explained A promise is a placeholder for a value that arrives later. async/await lets you write code that waits for promises as if… Intermediate · Explains an idea · Any system Article Async code 15 Oct 2026
• 0014 uv: Python package and project manager uv is a very fast Python package and project manager written in Rust. It replaces pip, venv and related tools, manages lock… Any system Repo Environments & packages 15 Oct 2026
• 0023 Run async tasks with a concurrency limit A small mapLimit helper that runs an async function over many items with at most N in flight, keeps result order, stops… Advanced · Step by step · Any system Script Async code 15 Oct 2026
• 0024 TypeScript basics: types, interfaces, unions and narrowing TypeScript adds type annotations to JavaScript and checks them before your code runs. These are the core ideas you need to read… Beginner · Explains an idea · Any system Article Basics 15 Oct 2026
• 0015 Ruff: Python linter and formatter Ruff is a fast Python linter and code formatter written in Rust. It catches bugs such as undefined names and unused imports… Any system Repo Common errors · Testing 15 Oct 2026
• 0032 First-time Git setup: name, email, default branch, SSH or HTTPS Tell Git who you are, pick sensible defaults, and choose between SSH and HTTPS for GitHub. Includes a small script that applies… Beginner · Step by step · Linux, macOS, Windows Script Setup 15 Oct 2026
• 0025 Regular expressions cheat sheet (JavaScript flavor) The regex syntax you actually use, from character classes and quantifiers to groups, lookarounds and flags, with the JavaScript methods that apply… Beginner · Cheat sheet · Any system Article Basics · Basics 15 Oct 2026
• 0028 Node.js The source of the Node.js runtime: a JavaScript engine (V8) plus APIs for files, networking, processes and more, used to run JavaScript… Linux, macOS, Windows Repo Node.js 15 Oct 2026