notfilippo opened a new issue, #5631:
URL: https://github.com/apache/arrow-rs/issues/5631
**Describe the bug**
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A clear and concise description of what the bug is.
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`C Data interface error: The datatype ""+r"" is still not supported in Rust
implementation`
**To Reproduce**
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Steps to reproduce the behavior:
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```rust
let value_data = PrimitiveArray::<Int8Type>::from_iter_values([10_i8, 11,
12, 13, 14, 15, 16, 17]);
// Construct a run_ends array:
let run_ends_values = [4_i32, 6, 7, 9, 13, 18, 20, 22];
let run_ends_data =
PrimitiveArray::<Int32Type>::from_iter_values(run_ends_values.iter().copied());
// Construct a run ends encoded array from the above two
let ree_array = RunArray::<Int32Type>::try_new(&run_ends_data,
&value_data).unwrap();
// export it
let (array, schema) = to_ffi(&ree_array.to_data())?;
// (simulate consumer) import it
let data = unsafe { from_ffi(array, &schema) }?;
```
**Expected behavior**
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A clear and concise description of what you expected to happen.
-->
The `RunArray` can be converted to / from the C data interface.
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