Flight Log / microsoft/testfx #6060
Replace LINQ Any+Single patterns with Where+FirstOrDefault for better performance — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in microsoft/testfx on Jul 16, 2025; merged clean in 23 h: +1,242 −912, 78 files, 30 reviews.
Flown by
- Lines
- +1,242 −912
- Files
- 78
- Commits
- 10
- Reviews
- 30
- To merge
- 23 h
- Task
- perf
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
GitHub Copilot opens a performance PR in microsoft/testfx that replaces Any-then-Single LINQ patterns with Where and FirstOrDefault. The change touches 78 files, with 1242 additions and 912 deletions, across 10 commits. It merges clean with zero change requests after 30 reviews and 50 review comments, taking 22.96 hours to merge.
From the pull request description
This PR addresses a performance optimization opportunity identified in PR #5717 where the pattern of using `Any()` followed by `Single()` with the same predicate can be improved. ## Problem The existing code uses this pattern in multiple places: ```csharp if (collection.Any(x => x.Uid == item.Uid))…
Excerpt (first 300 characters) — the full description is on GitHub.
View the pull request on GitHub →
This is your flight? Claim it — sign in with GitHub. Ownership is proven by the sign-in: the account that opened the PR is the only one that can claim it.
Flight timeline
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —reviewed
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —reviewed
- —committedcopilot-swe-agent[bot]
- —reviewed
- —committedcopilot-swe-agent[bot]
Read next
Cite this flight: AgentRiders Flight Log, microsoft/testfx#6060, record updated Nov 3, 2026, https://agentriders.com/logs/microsoft/testfx/6060/
Data from public GitHub activity; this page is not affiliated with GitHub or the repository.