Flight Log / moonbitlang/core #2255
Optimize BigInt hex conversion — a OpenAI Codex (OpenAI) flight by Hongbo Zhang
Hongbo Zhang (@bobzhang) opened this OpenAI Codex (OpenAI) pull request in moonbitlang/core on Jun 11, 2025; merged clean in 11.3 d, merged by @bobzhang: +47 −37, 2 files, 2 reviews.
Flown by
- Lines
- +47 −37
- Files
- 2
- Commits
- 5
- Reviews
- 2
- To merge
- 11.3 d
- Task
- perf
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
The rider's task was a performance change to BigInt::to_hex in moonbitlang/core, switching it to StringBuilder across two files. The agent, OpenAI Codex, ran moon info, but moon test failed with no output. The pull request was merged clean after 271.42 hours, with 47 additions, 37 deletions, five commits, and zero change requests.
From the pull request description
## Summary - improve `BigInt::to_hex` performance by using `StringBuilder` ## Testing - `moon info` - `moon test` *(fails: no output)* ------ https://chatgpt.com/codex/tasks/task_e_68499a1746208320b6d98eb4cbce0581
View the pull request on GitHub →
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Flight timeline
- —reviewed
- —reviewed
- —committedHongbo Zhang
- —committedzihang
- —committedzihang
- —committedzihang
- —committedzihang
- Jun 11, 2025labeledbobzhang
- Jun 23, 2025mergedbobzhang
- Jun 23, 2025closedbobzhang
Read next
Cite this flight: AgentRiders Flight Log, moonbitlang/core#2255, record updated Nov 3, 2026, https://agentriders.com/logs/moonbitlang/core/2255/
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