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Honor appended values for VBuffer clones and allow enumerable index maps to produce more values than the source column. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Copilot review overview
🟢 Approval recommended
The implementations match the documented behavior and include focused regression coverage.
Review effort: Balanced
Findings: None
What changed in this PR
Fixes cloning behavior for default-value appends and enumerable index maps.
Changes:
- Appends default
VBuffer<T>values during cloning. - Allows enumerable index maps longer than the source column.
- Adds regression tests for both behaviors.
| File | Description |
|---|---|
src/Microsoft.Data.Analysis/DataFrameColumn.cs |
Clarifies clone append semantics. |
src/Microsoft.Data.Analysis/DataFrameColumns/VBufferDataFrameColumn.cs |
Implements default-value appends. |
src/Microsoft.Data.Analysis/PrimitiveDataFrameColumn.cs |
Removes the source-length limit on enumerable maps. |
test/Microsoft.Data.Analysis.Tests/VBufferColumnTests.cs |
Tests appended default vectors. |
test/Microsoft.Data.Analysis.Tests/PrimitiveDataFrameColumnTests.cs |
Tests longer enumerable maps. |
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numberOfNullsToAppendseemed like worse optionsAddresses the two findings from the review on #7750.