Function is_null

arrow-arith/src/boolean.rs:327–334

Returns a non-null [BooleanArray] with whether each value of the array is null. # Error This function never errors. # Example ```rust # use arrow_array::BooleanArray; # use arrow_arith::boolean::is_null; let a = BooleanArray::from(vec![Some(false), Some(true), None]); let a_is_null = is_null(&a).unwrap(); assert_eq!(a_is_null, BooleanArray::from(vec![false, false, true])); ```

(input: &dyn Array)

/// assert_eq!(a_is_null, BooleanArray::from(vec![false, false, true]));
/// ```
pub fn is_null(input: &dyn Array) -> Result<BooleanArray, ArrowError> {
    let values = match input.logical_nulls() {
        None => BooleanBuffer::new_unset(input.len()),
        Some(nulls) => !nulls.inner(),
    };

    Ok(BooleanArray::new(values, None))
}

/// Returns a non-null [BooleanArray] with whether each value of the array is not null.
/// # Error