Repository Index

Crack LeetCode, not only how, but also why.

• leetcode
• algorithms
• interview-questions
• data-structures

🧠 Train a 64M-parameter LLM from scratch in just 2h!

• artificial-intelligence
• large-language-model

How to create an OS from scratch

TranslatedA Python web scraping tutorial series, learning Python web scraping from 0 to 1, including browser packet capture and mobile APP packet capture with tools such as fiddler and mitmproxy, the use of the various modules involved in web scraping, such as requests, beautifulSoup, selenium, appium, scrapy, etc., as well as IP proxies, CAPTCHA recognition, using Mysql and MongoDB databases with Python, multi-threaded and multi-process scraping, reverse engineering and cracking of CSS scraping encryption, JS scraping reverse engineering, distributed scraping, practical scraping project examples, etc.

• python3
• python-script
• python-spider

🛠️⚡ Step-by-step tutorial to build a modern JavaScript stack.

• tutorial
• stack
• javascript
• react

Translated7 days golang programs from scratch (web framework Gee, distributed cache GeeCache, object relational mapping ORM framework GeeORM, rpc framework GeeRPC etc) A series on writing/implementing things from scratch in 7 days with Go

• learning
• starter-project
• golang
• scratch

llama3 implementation one matrix multiplication at a time

:books: Learn to write an embedded OS in Rust :crab:

• rust
• bare-metal
• raspberry-pi-3
• rpi3

Crack WPA/WPA2 Wi-Fi Routers with Airodump-ng and Aircrack-ng/Hashcat

• wifi
• wpa2-cracking
• aircrack-ng
• hashcat

TranslatedPython scripts. Simulated login to Zhihu, web crawlers, working with Excel, WeChat official accounts, remote power-on

• python
• crawler
• wechat
• excel

Writing a sqlite clone from scratch in C

• database

Implementing a Neural Network from Scratch

TranslatedA basic tutorial for getting started with AI Agents from zero background. It is not just a tutorial but also an Agent that can run locally: read and write files, execute commands, MCP, long-term memory, with a built-in web interface to see every step clearly. Starting from a minimal 100-line loop, each lesson adds one capability, and in the end it breaks down mainstream Agents such as Claude Code and Codex

• agent
• ai-agent
• chinese
• claude-code

✅ Complete beginners tutorial building a todo list from scratch in Phoenix 1.7 (latest)

• elixir
• phoenix
• tutorial
• beginner

👃 Crack open your old Game Boy and peek at the LCD data bus.

• game-boy-hardware
• game-boy
• gameboy

TranslatedBuild GPT-2 from scratch in PyTorch, step by step

• attention
• chinese
• deep-learning
• from-scratch