[GitHub] [arrow-rs] tustvold commented on a change in pull request #1039: BooleanBufferBuilder::append_packed (#1038)

[GitBox <gi...@apache.org>]

tustvold commented on a change in pull request #1039:
URL: https://github.com/apache/arrow-rs/pull/1039#discussion_r778406471



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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:
       Sorry was waiting to find time to evaluate @jhorstmann 's comment - will unmark as draft once I've done that - and address review comments




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