wiedld commented on PR #6927:
URL: https://github.com/apache/arrow-rs/pull/6927#issuecomment-2567259559

   > I've not had time to look in detail, but this sounds a lot like the Extend 
trait which we already support, and is more flexible as it allows appending 
iterators? Perhaps we just need to better document this?
   
   Ah yes, the [initial use case (in the regex 
code)](https://github.com/apache/arrow-rs/pull/6849#discussion_r1896417566) 
could have been refactored and then used the Extend trait for the generics. 
Thank you.
   
   Do you think its still worthwhile to have this trait anyways? Since the 
append interfaces (for list building) are publicly exposed for other users. Or 
should we only add more documentation referring users to the Extend interface?


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