Dandandan opened a new pull request #9293:
URL: https://github.com/apache/arrow/pull/9293


   The idea of this PR is to have a function `from_iter_values` that (just like 
`from_iter`) creates an array based on an iterator, but from `T` instead of 
`Option<T>`.
   
   I have seen some places in DataFusion (especially `to_array_of_size`) where 
an `Array` is generated from a `Vec` of items, which could be replaced by this.
   The other iterators have some memory / time overhead in both creating and 
manipulating the null buffer. 
   
    


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