⚡ Bolt: replace O(4N) multi-pass loops with O(N) hash map grouping#108
⚡ Bolt: replace O(4N) multi-pass loops with O(N) hash map grouping#108daggerstuff wants to merge 1 commit intostagingfrom
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Replaced four list comprehensions in `generate_processing_report` with a single dictionary grouping pass to improve time complexity from O(4N) to O(N). Co-authored-by: daggerstuff <261005129+daggerstuff@users.noreply.github.com>
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Reviewer's guide (collapsed on small PRs)Reviewer's GuideRefactors generate_processing_report to compute per-stage dataset counts in a single pass over processed_datasets using an accumulator dictionary, improving time complexity and performance. Class diagram for updated generate_processing_report methodclassDiagram
class DatasetProcessor {
List processed_datasets
generate_processing_report() Dict
}
class Dict {
}
class List {
}
DatasetProcessor --> List : uses
DatasetProcessor --> Dict : returns
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Hey - I've left some high level feedback:
- If the report output order matters (e.g., stages shown in a specific sequence), double-check that switching to hash map–based aggregation doesn’t inadvertently change the ordering and, if needed, enforce a deterministic order when generating the report.
- Consider whether using collections.Counter or defaultdict(int) for the per-stage counts would simplify the new single-pass aggregation logic and keep it easy to read and maintain.
Prompt for AI Agents
Please address the comments from this code review:
## Overall Comments
- If the report output order matters (e.g., stages shown in a specific sequence), double-check that switching to hash map–based aggregation doesn’t inadvertently change the ordering and, if needed, enforce a deterministic order when generating the report.
- Consider whether using collections.Counter or defaultdict(int) for the per-stage counts would simplify the new single-pass aggregation logic and keep it easy to read and maintain.Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.
💡 What: Replaced four separate list comprehensions (which iterated over
self.processed_datasetsfour times) with a single pass that builds a dictionary counter for each stage.🎯 Why: To improve performance by reducing the time complexity of the
generate_processing_reportmethod from O(4N) to O(N). This prevents unnecessary multi-pass loops over potentially large datasets.📊 Impact: Makes report generation faster and strictly adheres to the performance constraint of targeting ONE specific bottleneck.
🔬 Measurement: Code execution profiles will show
generate_processing_reportcompleting with a single iteration, noticeably faster for large arrays of datasets.PR created automatically by Jules for task 12773777361858813186 started by @daggerstuff
Summary by Sourcery
Enhancements:
Summary by cubic
Reduced
generate_processing_reportfrom four passes to one O(N) pass, speeding up report generation on large datasets without changing the output.by_stagecounts using a dict.processed_datasets,by_stage,datasets).Written for commit 9703e32. Summary will update on new commits.
Summary by CodeRabbit