tustvold commented on a change in pull request #1039:
URL: https://github.com/apache/arrow-rs/pull/1039#discussion_r782142570
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File path: arrow/src/array/builder.rs
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@@ -398,6 +399,95 @@ impl BooleanBufferBuilder {
}
}
+ /// Append `count` bits from `to_set`
+ ///
+ /// `to_set` is a slice of bits packed LSB-first into `[u8]`
+ ///
+ /// # Panics
+ ///
+ /// Panics if `to_set` does not contain `ceil(count / 8)` bytes
+ #[inline]
+ pub fn append_packed(&mut self, count: usize, to_set: &[u8]) {
+ assert_eq!((count + 7) >> 3, to_set.len());
Review comment:
The transform version is 2x faster :tada: will update PR to use this
:smile:
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