universalmind303 commented on issue #8568:
URL:
https://github.com/apache/arrow-datafusion/issues/8568#issuecomment-1866966567
Ideally, i'd prefer something like this for implementing scalar udfs.
```rust
pub trait ScalarUdf: Send + Sync {
/// The name for this function
fn name(&self) -> &'static str;
/// Return the signature for this function
fn signature(&self) -> Signature;
/// Return type of the function
fn return_type(&self) -> DataType;
/// udf implementation
fn func(&self, args: &[&ColumnarValue]) -> Result<ColumnarValue,
DataFusionError>
}
```
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