Totoro

battle-tested-patterns. Battle-tested programming patterns from production codebases — React, Linux, Go, Chromium, and more. Precise source links, multi-language examples, runnable exercises.

python-lab. Hands-on modern Python lab — typing, async, pytest, FastAPI, NumPy/Pandas, SQLAlchemy, and more.

c-lab. C Language General Knowledge Lab — 12 chapters from syntax to system programming, each chapter has its own Makefile, and `make test` enables one-click verification.

frontend-expert-roadmap. A front-end expert learning roadmap based on pnpm monorepo, containing 25 independent labs.

testing-lab. A learning and experimental field for front-end testing systems. After completing the course, you will be able to understand 95% of front-end test code, maintain it, and build test infrastructure in your own projects.

rust-lab. A Rust tutorial repository that guides you from scratch step-by-step. Each chapter is a small, standalone project that can be "cargo run", using the most commonly used crates.