Function downcast_array

arrow-array/src/cast.rs:814–819

Downcasts a `dyn Array` to a concrete type ``` # use arrow_array::{BooleanArray, Int32Array, RecordBatch, StringArray}; # use arrow_array::cast::downcast_array; struct ConcreteBatch { col1: Int32Array, col2: BooleanArray, col3: StringArray, } impl ConcreteBatch { fn new(batch: &RecordBatch) -> Self { Self { col1: downcast_array(batch.column(0).as_ref()), col2: downcast_array(batch.column(1).as_r

(array: &dyn Array)

///
/// Panics if array is not of the correct data type
pub fn downcast_array<T>(array: &dyn Array) -> T
where
    T: From<ArrayData>,
{
    T::from(array.to_data())
}

mod private {
    pub trait Sealed {}