From the article, literally one line above the line you quoted:
In the past week, just prompting, and inspecting the code to provide guidance from time to time, in a few hours I did the following four tasks, in hours instead of weeks:
- I modified my linenoise library to support UTF-8, and created a framework for line editing testing that uses an emulated terminal that is able to report what is getting displayed in each character cell. Something that I always wanted to do, but it was hard to justify the work needed just to test a side project of mine. But if you can just describe your idea, and it materializes in the code, things are very different.
- I fixed transient failures in the Redis test. This is very annoying work, timing related issues, TCP deadlock conditions, and so forth. Claude Code iterated for all the time needed to reproduce it, inspected the state of the processes to understand what was happening, and fixed the bugs.
- Yesterday I wanted a pure C library that would be able to do the inference of BERT like embedding models. Claude Code created it in 5 minutes. Same output and same speed (15% slower) than PyTorch. 700 lines of code. A Python tool to convert the GTE-small model.
- In the past weeks I operated changes to Redis Streams internals. I had a design document for the work I did. I tried to give it to Claude Code and it reproduced my work in, like, 20 minutes or less (mostly because I’m slow at checking and authorizing to run the commands needed).
nil@piefed.ca 12 hours ago
I agree that Microsoft Copilot is worthless as shit.