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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/28 16:00:48 UTC

[GitHub] [arrow] lidavidm commented on pull request #13009: ARROW-602: [C++] Provide iterator access to primitive elements inside an Array

lidavidm commented on PR #13009:
URL: https://github.com/apache/arrow/pull/13009#issuecomment-1112384179

   > > That wouldn't work, because there are no specialized subclasses of ChunkedArray. We want the iterator to yield raw C values whose type is datatype-specific.
   > 
   > ...I still think it can work for the `Array` types that currently support iteration (std::enable_if magic). The `ChunkedArrayIterator` in this PR can extract raw C values from a `ChunkedArray` so I am not suggesting something different.
   
   Er, you simply can't implement `begin` right? It would have to be
   
   ```
   template <typename Type>
   ChunkedArrayIterator<Type> begin() const;
   ```
   
   which is a little clumsy


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