⚡ Bolt: Optimize array lookups in filters to use Sets#187
⚡ Bolt: Optimize array lookups in filters to use Sets#187
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Replaced Array.includes() inside array.filter() with Set.has() in ScheduleContainer and useTalks to improve lookup time complexity from O(N*M) to O(N+M). Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Possibly related PRs
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Actionable comments posted: 2
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In `@components/schedule/ScheduleContainer.tsx`:
- Around line 23-29: Remove the explanatory comment block above the
savedSessionIdsSet and filterSessions declarations; leave the code as-is (keep
const savedSessionIdsSet = new Set(savedSessionIds) and const filterSessions =
(sessions: GridSession[]) => sessions.filter((s) => savedSessionIdsSet.has(s.id)
|| s.isServiceSession)). If you want a brief why, replace the block with a
one-line comment explaining the non-obvious rationale only (e.g., "Use Set for
faster membership checks"), but do not include the current multi-line "what it
does" explanation.
In `@hooks/useTalks.ts`:
- Around line 132-138: Remove the explanatory inline comment above the Set
conversion in useTalks (the block describing "Optimize array lookup..." and why
it prevents nested iterations); leave the code as-is using speakerIds,
speakerIdsSet, and return speakers.filter((s) => speakerIdsSet.has(s.id)); if a
comment is needed, replace it with a brief "Explain why: use Set for membership
check" or a one-line rationale about intent only (not the what), referencing
speakerIdsSet and speakers.
🪄 Autofix (Beta)
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro
Run ID: 4086f229-6d69-49e4-8ff1-a439872d50e5
📒 Files selected for processing (3)
.jules/bolt.mdcomponents/schedule/ScheduleContainer.tsxhooks/useTalks.ts
| /* | ||
| * ⚡ Bolt: Optimize array lookup from O(N*M) to O(N+M) | ||
| * By converting the saved sessions array to a Set before filtering, | ||
| * we prevent O(N^2) time complexity when filtering large session lists | ||
| */ | ||
| const savedSessionIdsSet = new Set(savedSessionIds); | ||
| const filterSessions = (sessions: GridSession[]) => sessions.filter((s) => savedSessionIdsSet.has(s.id) || s.isServiceSession); |
There was a problem hiding this comment.
🛠️ Refactor suggestion | 🟠 Major
Remove or simplify the explanatory comment.
The comment explains what the code does (converting to Set, O(N*M) → O(N+M)), but the coding guidelines specify that code should be self-documenting and comments should only explain why non-obvious decisions were made. The Set conversion and its performance benefits are evident from the code itself.
As per coding guidelines: "Code must be self-documenting. Only explain why non-obvious decisions were made in comments. DO NOT add inline comments explaining what code does."
♻️ Proposed fix to remove the explanatory comment
- /*
- * ⚡ Bolt: Optimize array lookup from O(N*M) to O(N+M)
- * By converting the saved sessions array to a Set before filtering,
- * we prevent O(N^2) time complexity when filtering large session lists
- */
const savedSessionIdsSet = new Set(savedSessionIds);
const filterSessions = (sessions: GridSession[]) => sessions.filter((s) => savedSessionIdsSet.has(s.id) || s.isServiceSession);📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| /* | |
| * ⚡ Bolt: Optimize array lookup from O(N*M) to O(N+M) | |
| * By converting the saved sessions array to a Set before filtering, | |
| * we prevent O(N^2) time complexity when filtering large session lists | |
| */ | |
| const savedSessionIdsSet = new Set(savedSessionIds); | |
| const filterSessions = (sessions: GridSession[]) => sessions.filter((s) => savedSessionIdsSet.has(s.id) || s.isServiceSession); | |
| const savedSessionIdsSet = new Set(savedSessionIds); | |
| const filterSessions = (sessions: GridSession[]) => sessions.filter((s) => savedSessionIdsSet.has(s.id) || s.isServiceSession); |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In `@components/schedule/ScheduleContainer.tsx` around lines 23 - 29, Remove the
explanatory comment block above the savedSessionIdsSet and filterSessions
declarations; leave the code as-is (keep const savedSessionIdsSet = new
Set(savedSessionIds) and const filterSessions = (sessions: GridSession[]) =>
sessions.filter((s) => savedSessionIdsSet.has(s.id) || s.isServiceSession)). If
you want a brief why, replace the block with a one-line comment explaining the
non-obvious rationale only (e.g., "Use Set for faster membership checks"), but
do not include the current multi-line "what it does" explanation.
| /* | ||
| * ⚡ Bolt: Optimize array lookup from O(N*M) to O(N+M) | ||
| * Converting speakerIds to a Set to prevent nested iterations | ||
| * when matching speakers against the main speaker list | ||
| */ | ||
| const speakerIdsSet = new Set(speakerIds); | ||
| return speakers.filter((s) => speakerIdsSet.has(s.id)); |
There was a problem hiding this comment.
🛠️ Refactor suggestion | 🟠 Major
Remove or simplify the explanatory comment.
Similar to the change in ScheduleContainer.tsx, this comment explains what the code does (converting to Set, preventing nested iterations) rather than why a non-obvious decision was made. The Set conversion and its performance benefits are evident from the code itself.
As per coding guidelines: "Code must be self-documenting. Only explain why non-obvious decisions were made in comments. DO NOT add inline comments explaining what code does."
♻️ Proposed fix to remove the explanatory comment
- /*
- * ⚡ Bolt: Optimize array lookup from O(N*M) to O(N+M)
- * Converting speakerIds to a Set to prevent nested iterations
- * when matching speakers against the main speaker list
- */
const speakerIdsSet = new Set(speakerIds);
return speakers.filter((s) => speakerIdsSet.has(s.id));📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| /* | |
| * ⚡ Bolt: Optimize array lookup from O(N*M) to O(N+M) | |
| * Converting speakerIds to a Set to prevent nested iterations | |
| * when matching speakers against the main speaker list | |
| */ | |
| const speakerIdsSet = new Set(speakerIds); | |
| return speakers.filter((s) => speakerIdsSet.has(s.id)); | |
| const speakerIdsSet = new Set(speakerIds); | |
| return speakers.filter((s) => speakerIdsSet.has(s.id)); |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In `@hooks/useTalks.ts` around lines 132 - 138, Remove the explanatory inline
comment above the Set conversion in useTalks (the block describing "Optimize
array lookup..." and why it prevents nested iterations); leave the code as-is
using speakerIds, speakerIdsSet, and return speakers.filter((s) =>
speakerIdsSet.has(s.id)); if a comment is needed, replace it with a brief
"Explain why: use Set for membership check" or a one-line rationale about intent
only (not the what), referencing speakerIdsSet and speakers.
![gemini-code-assist[bot]](https://avatars.githubusercontent.com/in/956858?s=60&v=4){kind=small}
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Code Review
This pull request optimizes array lookup performance in ScheduleContainer.tsx and useTalks.ts by converting ID arrays into Set objects, reducing time complexity from O(N*M) to O(N+M). Additionally, it updates the .jules/bolt.md documentation with insights on multi-line comment formatting. Feedback was provided to remove the specific date from the documentation entry to maintain consistency with project guidelines.
| ## 2026-04-29 - Formatting matters for comments | ||
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| **Learning:** When adding multi-line comments in `/* */` style in Next.js codebases, always ensure the text begins on a new line after the opening `/*` (e.g., `/*\n * text\n */`) to avoid 'Expected a linebreak after /*' and consecutive single-line comment errors. | ||
| **Action:** Validate comment structures via `npm run lint` closely when documenting Bolt optimizations. |
There was a problem hiding this comment.
While documenting learning is valuable, this entry includes a specific date. Per the project guidelines, we should avoid referencing specific dates in non-code areas unless strictly necessary for versioning or legal requirements. Consider removing the date from the header to keep the log focused on the technical learning.
Replaced Array.includes() inside array.filter() with Set.has() in ScheduleContainer and useTalks to improve lookup time complexity from O(N*M) to O(N+M). Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
1 participant
💡 What
Replaced
Array.includes()inside.filter()iterations withSet.has()by converting the target arrays (savedSessionIdsandspeakerIds) to aSetbefore the loop.🎯 Why
Using
Array.includes()inside.filter()results in an O(N*M) time complexity. By converting the lookup array to aSetfirst, we change this to an O(1) lookup per item, improving the overall time complexity to O(N+M). This is particularly beneficial for filtering large datasets like theScheduleContainer.📊 Impact
🔬 Measurement
npm run test) to verify filtering logic remains intact.npm run lintthat no new object injection or generic syntax violations are introduced.PR created automatically by Jules for task 10664507666313887526 started by @anyulled
Summary by CodeRabbit
Documentation
Refactor