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Summarize non-obvious methods file by file in a paper project

A commenter had Claude Code write file-by-file summaries of non-obvious methods in a research project, then reviewed them to keep track of the work.

Time saved
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Use case overview

A commenter had Claude Code write file-by-file summaries of non-obvious methods in a research project, then reviewed them to keep track of the work.

Reported experience

  1. What they did

    A commenter used Claude Code while rewriting personal projects from their own earlier, messier versions and making later incremental upgrades. They had Claude produce a brief file-by-file summary plus notes on any non-obvious methods, then reread those notes multiple times and edited explanations they felt could be clearer to keep the project understandable and useful for later model runs.

  2. How it went

    They said it helped them keep a mental map of the codebase and understand how it worked overall. It was not complete: they still lost track of some parts.

  3. Worth knowing

    The source says this was done over the last two weeks, and it worked best because the project began as their own code with most logic preserved.

Example prompts

Try with Claude Code
Go through the files in [project folder] one by one and write a short summary of each, focusing on the non-obvious methods, assumptions, or tricks it uses. Save them as a single document called [filename] with a section per file. Don't change any code; when done, list the three parts you're least sure about so I can review them.
Coding · Advanced
  1. Write migration plan
  2. Agent edits in batches
  3. Tests per batch

Ship a 40-file refactor with a coding agent

Plan, execute and review a cross-cutting refactor in small batches, with Claude Code making the edits and GitHub Copilot reviewing each PR.

Claude Code · GitHub Copilot