tustvold commented on code in PR #4509:
URL: https://github.com/apache/arrow-rs/pull/4509#discussion_r1260501026
##########
arrow-array/src/builder/generic_bytes_builder.rs:
##########
@@ -150,6 +190,11 @@ impl<T: ByteArrayType> GenericByteBuilder<T> {
self.value_builder.as_slice()
}
+ /// Returns the current values buffer as a mutable slice
+ pub fn values_slice_mut(&mut self) -> &mut [u8] {
Review Comment:
This is unsound as it would permit creating non UTF-8 data
##########
arrow-array/src/builder/generic_bytes_builder.rs:
##########
@@ -109,13 +109,53 @@ impl<T: ByteArrayType> GenericByteBuilder<T> {
};
}
+ /// Appends a value into the builder.
+ ///
+ /// # Panics
+ ///
+ /// Panics if the resulting length of [`Self::values_slice`] would exceed
`T::Offset::MAX`
+ #[inline]
+ pub fn append_slice(&mut self, values: &[impl AsRef<T::Native>]) {
Review Comment:
What is the rationale for these methods over the existing Extend support
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