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Common Lisp keeps code live to shorten the feedback loop for LLM-written programs

vivienhenz.com 5 min read Editor score 7/10

Common Lisp’s image-based environment lets a replaced function take effect immediately, without rebuilding or restarting the program. That tight feedback loop is a useful design point to consider when code generation makes validation the bottleneck.

What

Common Lisp’s live, image-based runtime lets developers replace functions without restarting the program.

How

On errors, it opens a debugger with the stack and variables, where a fix can be made and execution resumed; macros can transform code into new code.

Why it matters

Short feedback loops can help engineers iterate on LLM-written programs, while domain-specific macros let users customize products within the language.

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