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refactor: wire string-with-nulls columns to marrow StringArray (remove LegacyObjectData demotion path)

refactorCode refactoring opportunitiesCode refactoring opportunities

tech-debtTechnical debt itemsTechnical debt items

Status: Open.

#752 In JRedrupp/bison;

· JRedrupp opened on Apr 20, 2026

simplification: replace indexed for-i-in-range(len(_cols)) loops with for-col-in iterators

refactorCode refactoring opportunitiesCode refactoring opportunities

Status: Open.

#750 In JRedrupp/bison;

· JRedrupp opened on Apr 20, 2026

refactor: consolidate _from_records_build_*_col into a single parametric builder

refactorCode refactoring opportunitiesCode refactoring opportunities

tech-debtTechnical debt itemsTechnical debt items

Status: Open.

#749 In JRedrupp/bison;

· JRedrupp opened on Apr 20, 2026

refactor: retire DFScalarVisitor pattern — replace visitor structs with direct isa[] chains

refactorCode refactoring opportunitiesCode refactoring opportunities

tech-debtTechnical debt itemsTechnical debt items

Status: Open.

#747 In JRedrupp/bison;

· JRedrupp opened on Apr 20, 2026

perf: pass sort-key data + permutation directly to sort kernel to avoid materialising reordered column

performancePerformance improvementPerformance improvement

Status: Open.

#733 In JRedrupp/bison;

· JRedrupp opened on Apr 19, 2026

refactor: extract visitor duplication in column.mojo (~1,500 lines of repeated code)

priority: medium

tech-debtTechnical debt itemsTechnical debt items

Status: Open.

#680 In JRedrupp/bison;

· JRedrupp opened on Apr 13, 2026

Migrate datetime64/timedelta64 columns from List[PythonObject] to marrow arrays

enhancementNew feature or requestNew feature or request

Status: Open.

#622 In JRedrupp/bison;

· JRedrupp opened on Apr 6, 2026

Zero-copy pandas interop via Arrow C Data Interface

enhancementNew feature or requestNew feature or request

Status: Open.

#621 In JRedrupp/bison;

· JRedrupp opened on Apr 6, 2026

bug: marrow GroupBy sum/min/max loses precision for large int64 values (> 2^53)

tech-debtTechnical debt itemsTechnical debt items

Status: Open.

#601 In JRedrupp/bison;

· JRedrupp opened on Apr 6, 2026

Dependency Dashboard

priority: low

Status: Open.

#98 In JRedrupp/bison;

· JRedrupp opened on Mar 10, 2026