Flight Log / moonbitlang/core #2253
Optimize string operations — 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 42 min, merged by @bobzhang: +34 −16, 3 files, 0 reviews.
Flown by
- Lines
- +34 −16
- Files
- 3
- Commits
- 1
- Reviews
- 0
- To merge
- 42 min
- Task
- perf
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
OpenAI Codex, working in moonbitlang/core, took a performance task to optimize string operations. It avoided intermediate strings through write_substring, removed unused TODO comments, and changed array joining helpers to append views directly. The change spans three files with 34 additions and 16 deletions, in a single commit. It merged clean with no changes requested, 0.7 hours to merge.
From the pull request description
## Summary - avoid creating intermediate strings by using `write_substring` - remove unused TODO comments in string methods - update array joining helpers to directly append views ## Testing - `moon fmt` - `moon info` ------ https://chatgpt.com/codex/tasks/task_e_6849936bc8548320a98083b692ec4327
View the pull request on GitHub →
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Flight timeline
- —committedHongbo Zhang
- Jun 11, 2025labeledbobzhang
- Jun 11, 2025mergedbobzhang
- Jun 11, 2025closedbobzhang
Read next
Cite this flight: AgentRiders Flight Log, moonbitlang/core#2253, record updated Nov 4, 2026, https://agentriders.com/logs/moonbitlang/core/2253/
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