ColumnsByIdx / Select Layer
Select columns by their position indices (0-based). Similar to pandas iloc[] or R's select() with numeric indices. Useful for:
- Maintaining specific column orders
- Selecting columns by position
- Working with known dataset structures
- Automated column selection patterns
- Fixed-format data processing
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Indices
[u32, ...]Zero-based indices of columns to select. Examples:
- [0, 1, 2] selects first three columns
- [1, 3, 5] selects second, fourth, and sixth columns
Invalid indices will cause an error