Building and debugging a YAML/Markdown preview tool for a site
Claude clones a real site's homepage code and builds a YAML/Markdown preview tool matching its rendering, then fixes a date-parsing bug and matches its colors.
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Building a 3D dog that uses wave physics to fetch a pool ball
The user iteratively debugs a Three.js scene where a dog creates ripples to nudge a ball across a pool, fixing physics and realism issues along the way.
Why TypeScript's .filter() won't narrow union return types
The user presses Claude on why .filter() won't narrow a union-typed array, exposing type predicates as unverified assertions rather than real type safety.
A client-side MP3 silence cutter, built waveform-first
A four-round build of a browser-only MP3 silence trimmer, adding zoomable dual waveforms, click-to-play scrubbing, and neatly categorized CSS along the way.
A from-scratch guide to porting a diffusion model to WebGPU
Claude clones a browser-based diffusion model port and writes a from-scratch guide covering ONNX export, WebGPU execution, and every design choice in the code.