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Mar 8, 2026 at 22:03
7
Anthropic used Claude to write a C compiler in Rust (CCC). I've really enjoyed following the discussion. The initial post shows how they wrote the harness with GCC as an oracle and a prompt specifying a design using SSA. The author has clear domain expertise. https://www.anthropic.com/engineering/building-c-compiler

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May 29, 2026 at 07:09
3
I find that I'm choosing AI tools based on the quality of the harness rather than the model. For example, I'm using Claude Code Web because its model of remote VMs is extremely convenient. I'm using Perplexity because it's tuned really well for web searches.
Jan 15, 2026 at 00:07
LLMs are great at style transfer, and this works surprisingly well for syntactic transformations too. I rewrote a small website's EJS templates to 1500 LOC of TSX with a oneshot in Claude. It took ~12 minutes, but it just worked. (TSX seems nicer than EJS for static analysis.)
Dec 31, 2025 at 12:33
24
I've realised that AGENTS.md / CLAUDE.md solve two distinct problems: * It tells the LLM the conventions of the project, avoiding follow-up prompts. * It precomputes a summary of the project, saving a bunch of searches at the start of a session.