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Debugging Lisp: fix and resume a program from any point in the stack - how Common Lisp stands out.

vindarel · demo · Watch on YouTube

Functional programmingTesting, debugging & developer tools

What it is

A five-minute demo of the Common Lisp debugger fixing a bug, recompiling a single function, and resuming execution from the failed stack frame. It shows how to avoid re-running long computations.

Why Hacker News recommends it

HN Lisp fans repeatedly link it as a short, concrete demonstration of Common Lisp's interactive debugging advantage.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2023, last 2025

What HN commenters said

  1. “my demo to show how to resume execution of a long running program, from the stack frame right before the bug”

    Five-minute demo resuming long-running program after recompiling fixed function.

    vindarel, 2023-11 · Recommendation · in “Interactive Common Lisp Development”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: common lisp, slime, debugger, restarts, interactive development

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