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Enhancing CTable - #675

Merged

FrancescAlted merged 20 commits into

mainfrom

enhancing-ctable

Jul 16, 2026

Commits on Jul 15, 2026
- Update to use latest C-Blosc2 sources
  FrancescAlted
  committed
  44ebca5
- Make paragraphs one-line long
  FrancescAlted
  committed
  fe00423
- Add Arrow PyCapsule interchange protocol to CTable (Gap A)
  
  FrancescAlted
  and
  claude
  committed
  ee82741
- Make CTable views read-only for value writes (Gap B)
  
  FrancescAlted
  and
  claude
  committed
  02eaa33
- Add Column.fillna() / CTable.dropna() and fix timestamp null detection (Gap C1)
  
  FrancescAlted
  and
  claude
  committed
  bf39bad
- Propagate nulls through Column arithmetic and comparisons (Gap C2b)
  
  FrancescAlted
  and
  claude
  committed
  a18bbc8
- Add UDF aggregations, engine dispatch plumbing, and CTable.apply() (Gap D)
  
  FrancescAlted
  and
  claude
  committed
  3e0cbff
- Add enhancing-ctable plan with implementation notes for Gaps A-D
  
  FrancescAlted
  and
  claude
  committed
  560d149
- Guard pandas import in test_groupby.py (fixes CI collection failure)
  
  FrancescAlted
  and
  claude
  committed
  76b7616
- Address Copilot review comments on UDF aggregations (Gap D2)
  
  FrancescAlted
  and
  claude
  committed
  580aef6
Commits on Jul 16, 2026
- Treat a UDF aggregation returning None as a null result (Gap D2)
  
  FrancescAlted
  and
  claude
  committed
  376f8e5
- Polish review fixes for Gaps A-D: apply() return type/validation, from_arrow() argument-form errors
  
  FrancescAlted
  and
  claude
  committed
  0571ea8
- Extend test coverage for Gaps A-D review
  
  FrancescAlted
  and
  claude
  committed
  fddd251
- Fix NameError when nan/inf scalars appear in lazy expressions
  
  FrancescAlted
  and
  claude
  committed
  05a5a67
- Speed up string-key groupby with exact hash-based factorization (Gap D1 follow-up)
  
  FrancescAlted
  and
  claude
  committed
  5fbbe62
- Make reductions on derived nullable expressions skip nulls (closes C2b deviation)
  
  FrancescAlted
  and
  claude
  committed
  f39fd40
- Remove plan-task references (Gap A-E) from docstrings and comments
  
  FrancescAlted
  and
  claude
  committed
  8b142ce
- Phase 2 plan added
  FrancescAlted
  committed
  c972b7b
- Changed default from self.col_names (all columns including computed) to self._stored_col_names
  FrancescAlted
  committed
  cc0d84c
- ShapeInferencer no longer ignores user shapes for nan/inf
  FrancescAlted
  committed
  ce36aa0

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Enhancing CTable - #675

Enhancing CTable#675
FrancescAlted merged 20 commits into
mainfrom
enhancing-ctable

Commits on Jul 15, 2026

Update to use latest C-Blosc2 sources

Make paragraphs one-line long

Add Arrow PyCapsule interchange protocol to CTable (Gap A)

Make CTable views read-only for value writes (Gap B)

Add Column.fillna() / CTable.dropna() and fix timestamp null detection (Gap C1)

Propagate nulls through Column arithmetic and comparisons (Gap C2b)

Add UDF aggregations, engine dispatch plumbing, and CTable.apply() (Gap D)

Add enhancing-ctable plan with implementation notes for Gaps A-D

Guard pandas import in test_groupby.py (fixes CI collection failure)

Address Copilot review comments on UDF aggregations (Gap D2)

Commits on Jul 16, 2026

Treat a UDF aggregation returning None as a null result (Gap D2)

Polish review fixes for Gaps A-D: apply() return type/validation, from_arrow() argument-form errors

Extend test coverage for Gaps A-D review

Fix NameError when nan/inf scalars appear in lazy expressions

Speed up string-key groupby with exact hash-based factorization (Gap D1 follow-up)

Make reductions on derived nullable expressions skip nulls (closes C2b deviation)

Remove plan-task references (Gap A-E) from docstrings and comments

Phase 2 plan added

Changed default from self.col_names (all columns including computed) to self._stored_col_names

ShapeInferencer no longer ignores user shapes for nan/inf