Function arrow::array::cast::as_run_array

pub fn as_run_array<T>(arr: &dyn Array) -> &RunArray<T>
where
    T: RunEndIndexType,

Force downcast of an Array, such as an ArrayRef to RunArray<T>, panic’ing on failure.

Example

let arr: RunArray<Int32Type> = vec![Some("foo")].into_iter().collect();
let arr: ArrayRef = std::sync::Arc::new(arr);
let run_array: &RunArray<Int32Type> = as_run_array::<Int32Type>(&arr);