Animated Git simulator showing file movements between working tree, staging, and HEAD.
Python learners, corporate training participants
Replit · GitKraken · LearnGitBranching
Most interesting, to me, is how much is running in the browser. Thanks to Svelte, Pyodide, isomorphic-git, LightningFS, and CodeMirror I'm able to provide a full environment for Python, Pandas, and Git.
I built much of this with Claude Code, and I'm happy to discuss how that went — what worked well and where I had to step in and make the calls myself.
I'm especially excited about the Git simulator: it shows the commit tree change as you run commands, plus an animated view of how files move between the working tree, the staging area, and HEAD.
The AI tutor, which uses Claude Haiku, was given my newsletters, classes, and exercises as inputs, along with a description of my pedagogical approach: instructors should give hints and feedback, but not reveal the answer.
Compiles pandas logic to TorchScript, then runs C++-only inference—eliminates Python runtime bottleneck for quant workflows.
Manim extension handles statistical concepts so you skip manual geometry code entirely.
Lint-time DataFrame checking when Pandera only validates at runtime.
Canonical piece decomposition visualization makes O(log N) queries actually click.
Commits as force graphs over time. Hypnotic but missing actual insights: why branches diverge, merge velocity.
Live multiplayer craps table with full betting UI—but it's a game, not a tool.
