viirya commented on code in PR #3542:
URL: https://github.com/apache/arrow-rs/pull/3542#discussion_r1084929638
##########
arrow-cast/src/cast.rs:
##########
@@ -3460,39 +3460,41 @@ fn cast_list_inner<OffsetSize: OffsetSizeTrait>(
Ok(Arc::new(list) as ArrayRef)
}
-/// Helper function to cast from `Utf8` to `LargeUtf8` and vice versa. If the
`LargeUtf8` is too large for
-/// a `Utf8` array it will return an Error.
-fn cast_str_container<OffsetSizeFrom, OffsetSizeTo>(
- array: &dyn Array,
-) -> Result<ArrayRef, ArrowError>
+/// Helper function to cast from one `ByteArrayType` to another and vice versa.
+/// If the target one (e.g., `LargeUtf8`) is too large for the source array it
will return an Error.
+fn cast_byte_container<FROM, TO>(array: &dyn Array) -> Result<ArrayRef,
ArrowError>
Review Comment:
`cast_byte_container` is used for Utf8 -> Binary too. As this is internal
function, we just need not to use it for Binary -> Utf8.
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