HaoYang670 commented on issue #1799:
URL: https://github.com/apache/arrow-rs/issues/1799#issuecomment-1147387304
>
```rust
pub struct ArrayData {
/// The data type for this array data
data_type: DataType,
/// The number of elements in this array data
len: usize,
/// The number of null elements in this array data
null_count: usize,
/// The offset into this array data, in number of items
offset: usize,
/// The null bitmap. A `None` value for this indicates all values are
non-null in
/// this array.
null_bitmap: Option<Bitmap>,
/// The array data layout
layout: ArrayDataLayout
}
```
It seems like that `ArrayData::data_type` is redundant because
`ArrayData::layout` can also tell you the type of the array?
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