vertexclique commented on a change in pull request #8688:
URL: https://github.com/apache/arrow/pull/8688#discussion_r526511029
##########
File path: rust/arrow/src/compute/kernels/boolean.rs
##########
@@ -457,4 +517,42 @@ mod tests {
assert_eq!(true, res.value(2));
assert_eq!(false, res.value(3));
}
+
+ fn assert_array_eq<T: ArrowNumericType>(
+ expected: PrimitiveArray<T>,
+ actual: ArrayRef,
+ ) {
+ let actual = actual
+ .as_any()
+ .downcast_ref::<PrimitiveArray<T>>()
+ .expect("Actual array should unwrap to type of expected array");
+
+ for i in 0..expected.len() {
+ if expected.is_null(i) {
+ assert!(actual.is_null(i));
+ } else {
+ assert_eq!(expected.value(i), actual.value(i));
+ }
+ }
+ }
+
Review comment:
In my PR if you use `slicing` method and then write a method to align
bit slices with smth along the lines:
```
unsafe {
let (_, data, _) = self.bit_slice.align_to::<u8>();
let dest = data.as_slice();
}
```
you will get two aligned middle bit domains. then you can check bit slices
however you want to.
slicing method:
https://github.com/apache/arrow/pull/8664/files#diff-715ddfbc534281523a73117d3bf4986d69d8a375dd320bc19f83298d3ba7ebd6R52
Reference for that method in backing library:
https://docs.rs/bitvec/0.19.4/bitvec/slice/struct.BitSlice.html#method.align_to
If you want subslice of bits from the given slice, for example for this
thing that you said:
> After the operation, "right shift" the resulting bitmap so it is based on
left_offset again (since the resulting data is based on left array)
You can do `.copy_from_bitslice` and copy into correct position in the
middle domain.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
