Method is_null

arrow-array/src/array/mod.rs:268–270

Returns whether the element at `index` is null according to [`Array::nulls`] Note: For performance reasons, this method returns nullability solely as determined by the null buffer. This difference can lead to surprising results, for example, [`NullArray::is_null`] always returns `false` as the array lacks a null buffer. Similarly [`DictionaryArray`], [`RunArray`] and [`UnionArray`] may encode nul

(&self, index: usize)

    /// assert_eq!(array.is_null(0), false);
    /// ```
    fn is_null(&self, index: usize) -> bool {
        self.nulls().map(|n| n.is_null(index)).unwrap_or_default()
    }

    /// Returns whether the element at `index` is *not* null, the
    /// opposite of [`Self::is_null`].