AlenkaF commented on code in PR #41593:
URL: https://github.com/apache/arrow/pull/41593#discussion_r1776671945
##########
docs/source/format/images/bool-diagram.svg:
##########
Review Comment:
Ha, checking the example with nanoarrow or numpy shows I was wrong:
```python
>>> column_bool = pa.array([True, True, False, None, False, True],
type=pa.bool_())
>>> column_bool
<pyarrow.lib.BooleanArray object at 0x7c13f973f580>
[
true,
true,
false,
null,
false,
true
]
>>> na.array(column_bool).inspect()
<ArrowArray bool>
- length: 6
- offset: 0
- null_count: 1
- buffers[2]:
- validity <bool[1 b] 11101100>
- data <bool[1 b] 11000100>
- dictionary: NULL
- children[0]:
>>> np.unpackbits(np.frombuffer(column_bool.buffers()[1], dtype="uint8"),
bitorder="little")
array([1, 1, 0, 0, 0, 1, 0, 0], dtype=uint8)
```
Will correct values bitmap buffer to `1 1 0 0 0 1 0 0`
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