Method extend_nulls

arrow-data/src/transform/mod.rs:742–749

Extends the in progress array with null elements, ignoring the input arrays. # Panics Panics if [`MutableArrayData`] not created with `use_nulls` or nullable source arrays

(&mut self, len: usize)

    ///
    /// Panics if [`MutableArrayData`] not created with `use_nulls` or nullable source arrays
    pub fn extend_nulls(&mut self, len: usize) {
        self.data.len += len;
        let bit_len = bit_util::ceil(self.data.len, 8);
        let nulls = self.data.null_buffer();
        nulls.resize(bit_len, 0);
        self.data.null_count += len;
        (self.extend_nulls)(&mut self.data, len);
    }

    /// Returns the current length
    #[inline]