edmondop opened a new issue, #8156:
URL: https://github.com/apache/arrow-datafusion/issues/8156
### Is your feature request related to a problem or challenge?
All these functions require fundamentally traversing row-by-row two arrays
and creating a row-by-row result, so it would be nice if we could have a single
implementation of the traversal and use a trait to inject the custom behavior
### Describe the solution you'd like
We could have something like this:
```rust
trait ArraySetOperationAccumulator<'a> {
fn new() -> Self;
fn process_left(&mut self, row: Row<'a>) -> Result<()>;
fn process_right(&mut self, row: Row<'a>) -> Result<()>;
fn rows(&self) -> &[Row<'a>];
fn clear(&mut self) -> ();
}
```
one of the problem of this implementation is the lifetime of Rows, but we
can maybe work around it if we use a .clone() on the rows and remove the
lifetime
### Describe alternatives you've considered
Duplicating the traversing code for each of these function, as it is already
happening
### Additional context
_No response_
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