ARROW-12948: [C++][Python] Add slice_replace kernel #10494
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Needs rebasing onto #10496. |
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Should probably be called binary_replace_slice since it works on non-Ascii input as well (it just slices in byte units, not codeunits).
cpp/src/arrow/compute/api_scalar.h
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Hmm... I'm not sure the default values will be picked up. Is it just for documentation?
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opts.start can be negative, so you should perhaps use before_slice instead.
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Good catch. I added a test case for this too.
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This looks a bit pedantic. Just output - output_start?
python/pyarrow/tests/test_compute.py
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It's not really useful to re-write the same tests in Python. What you could do is generate slices as in test_slice_compatibility to check Pandas compatibility.
docs/source/cpp/compute.rst
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| +--------------------------+------------+-------------------------+------------------------+---------+---------------------------------------+ | ||
| | utf8_lower | Unary | String-like | String-like | \(8) | | | ||
| +--------------------------+------------+-------------------------+------------------------+---------+---------------------------------------+ | ||
| | utf8_replace_slice | Unary | String-like | String-like | \(2) | :struct:`ReplaceSliceOptions` | |
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I believe the note number should be (4)?
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This adds a slice_replace kernel mimicking Pandas's str.slice_replace. There are both ascii and UTF8 variants, indexing respectively with bytes and codepoints. The ascii variant also works on binary arrays.