Function as_primitive_array

arrow-array/src/cast.rs:504–511

Force downcast of an [`Array`], such as an [`ArrayRef`], to [`PrimitiveArray `], panic'ing on failure. # Example ``` # use std::sync::Arc; # use arrow_array::{ArrayRef, Int32Array}; # use arrow_array::cast::as_primitive_array; # use arrow_array::types::Int32Type; let arr: ArrayRef = Arc::new(Int32Array::from(vec![Some(1)])); // Downcast an `ArrayRef` to Int32Array / PrimitiveArray : le

(arr: &dyn Array)

///     .unwrap();
/// ```
pub fn as_primitive_array<T>(arr: &dyn Array) -> &PrimitiveArray<T>
where
    T: ArrowPrimitiveType,
{
    arr.as_any()
        .downcast_ref::<PrimitiveArray<T>>()
        .expect("Unable to downcast to primitive array")
}

#[macro_export]
#[doc(hidden)]