jorgecarleitao edited a comment on pull request #9692: URL: https://github.com/apache/arrow/pull/9692#issuecomment-798977003
Another option is to use `T: AsRef<[Expr]>`, which works for any type that can be represented as a reference to an array (e.g. `vec` and &[]`) @houqp , AFAIK `impl` is just syntactic sugar for a generic; a trait object would be `&dyn Expr`. I am not sure the `IntoIterator` or `AsRef` would help, though: we would still need to `collect` it into a vector, which afaik results in a clone. ---------------------------------------------------------------- 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
