jorisvandenbossche commented on code in PR #5070:
URL: https://github.com/apache/arrow-rs/pull/5070#discussion_r1391077343
##########
arrow-data/src/ffi.rs:
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@@ -282,6 +286,27 @@ impl FFI_ArrowArray {
// If dictionary is not null should be valid for reads of `Self`
unsafe { self.dictionary.as_ref() }
}
+
+ /// Create a copy of an existing `FFI_ArrowArray`
+ ///
+ /// As required by the C Data Interface specification, this sets the
`release` member of `Self`
+ /// to `None`, but without calling the release callback.
+ pub fn copy(&mut self) -> Self {
Review Comment:
The C Data Interface specification calls this "moving":
https://arrow.apache.org/docs/format/CDataInterface.html#moving-an-array
(from my basic reading that is what is being implemented here, but I am not
a rust developer, so I can't say that for sure ;))
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