Function as_map_array

datafusion/common/src/cast.rs:196–198

Downcast Array to MapArray

(array: &dyn Array)

// Downcast Array to MapArray
pub fn as_map_array(array: &dyn Array) -> Result<&MapArray> {
    Ok(downcast_value!(array, MapArray))
}

// Downcast Array to NullArray
pub fn as_null_array(array: &dyn Array) -> Result<&NullArray> {