ShiKaiWi commented on issue #6430:
URL: https://github.com/apache/arrow-rs/issues/6430#issuecomment-2365286227
When trying to start from the `BooleanArray`, I find that the current
`BooleanBufferBuilder` can't reuse the buffer from a sliced `BooleanArray` if
the slicing is not aligned.
Here is the `BooleanBufferBuilder`'s definition:
```rust
pub struct BooleanBufferBuilder {
buffer: MutableBuffer,
len: usize,
}
```
And it assumes that the boolean values must start from the first bit, but a
sliced `BooleanArray` may skip some bits of the first byte. So I guess I have
to enhance the `BooleanBufferBuilder` by adding an `offset` field to support
reuse of the buffer of a sliced `BooleanArray` first.
@alamb @Rachelint Please let me know your opinions.
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