superseded: lavaan type-stable row-count change consolidated in #90 - #113
superseded: lavaan type-stable row-count change consolidated in #90#113seonghobae wants to merge 3 commits into
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Replaced `sapply` with `vapply` in `R/llcont.R` when iterating over `mispatts` to find the maximum number of rows. In R codebases, `sapply` involves significant overhead to deduce and simplify the return type dynamically. Using `vapply` with a predefined return type avoids this overhead.
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Estimated code review effort: 2 (Simple) | ~5 minutes Merge Risk: ⚪ Minimal · up to This is a localized performance optimization that preserves the intended iteration result; no actionable merge-blocking risk remains beyond normal checks and review. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
Full details: Docstring CoverageExplanation No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches🧪 Generate unit tests (beta)
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| if(any(class(mispatts) == "list")){ | ||
| npatts <- max(sapply(mispatts, nrow)) | ||
| ## Bolt: replaced sapply with vapply to avoid type deduction overhead | ||
| npatts <- max(vapply(mispatts, nrow, numeric(1))) |
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📝 Info: Numeric template preserves row counts
vapply safely promotes integer results from nrow to the numeric template. The maximum and subsequent missing-data validation remain unchanged.
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Replaced `sapply` with `vapply` in `R/llcont.R` when iterating over `mispatts` to find the maximum number of rows. In R codebases, `sapply` involves significant overhead to deduce and simplify the return type dynamically. Using `vapply` with a predefined return type avoids this overhead.
Replaced `sapply` with `vapply` in `R/llcont.R` when iterating over `mispatts` to find the maximum number of rows. In R codebases, `sapply` involves significant overhead to deduce and simplify the return type dynamically. Using `vapply` with a predefined return type avoids this overhead.
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Noema LLM review
The PR optimizes a list iteration in llcont.lavaan by replacing sapply with vapply. This aligns with the project's performance guidelines (Bolt) to avoid type deduction overhead when the return type is known. The use of numeric(1) as the template for nrow is correct and safe.
Reviewed changed lines
.jules/bolt.md:18 (RIGHT): Added a new performance guideline to avoidsapplyin favor ofvapplywhen return types are known.R/llcont.R:411 (RIGHT): Replacedsapply(mispatts, nrow)withvapply(mispatts, nrow, numeric(1)). Sincenrowalways returns a single integer/numeric value, this is a safe and more efficient replacement.
Adversarial validation
R/llcont.R:411 (RIGHT)falsified: The use ofnumeric(1)might cause a type mismatch ifnrowreturns an integer, leading to a runtime error invapply. — In R,vapplyallows the return value to be coerced to the template type.nrowreturns an integer, which is a subtype of numeric;numeric(1)safely accepts integer returns.R/llcont.R:411 (RIGHT)falsified: Ifmispattsis an empty list,max()on the result ofvapplymight return-Infor error, differing fromsapplybehavior. — Bothsapply(list(), nrow)andvapply(list(), nrow, numeric(1))returnnumeric(0).max(numeric(0))returns-Infwith a warning in both cases. Behavioral parity is maintained.- Residual risk: None. The change is a localized performance optimization with no change to logic.
Findings
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No blocking findings.
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Result: APPROVE
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Head SHA:
7b9d3a89c14d567d86b23b26bf61e1d4d1ed64eb -
Reviewer credential:
noema-review-github-app -
Actor:
cwl-noema-review[bot]
seonghobae
changed the title
1 participant
Superseded by #90
Fresh effective-delta audit at
7b9d3a89c14d567d86b23b26bf61e1d4d1ed64ebfound one valid product semantic: replacemax(sapply(mispatts, nrow))withmax(vapply(mispatts, nrow, numeric(1)))in the list-shapedllcont.lavaan()missing-pattern path.Canonical Draft #90@
ddaa04ad6a157c2f09a5f33496a63e28d2013ee3carries that exact type-stable computation on the current protected-base lineage. #90 also repairs later unrelated GLM/workflow/doctrine contamination by a normal fast-forward descendant while preserving history.The only remaining #113 delta is generated
.jules/bolt.mdguidance and wording that presents an uncommitted ~20% microbenchmark as general performance evidence. Neither is a unique statistical/test/fixture contract, and neither is required to preserve the lavaan likelihood behavior. No focused regression exists only on #113; the repository's existing lavaanmissing='ml'path remains the behavior check in the canonical lane.Every valid semantic contract from #113 is therefore present in #90. This closure transfers neither predecessor GREEN evidence nor merge authority, and #90 remains Draft pending its own unchanged exact-head checks and qualifying independent review.