Method null_count

arrow-data/src/data.rs:466–471

(&self)

    /// Returns the total number of nulls in this array
    #[inline]
    pub fn null_count(&self) -> usize {
        self.nulls
            .as_ref()
            .map(|x| x.null_count())
            .unwrap_or_default()
    }

    /// Returns the total number of bytes of memory occupied by the
    /// buffers owned by this [`ArrayData`] and all of its