Method is_null_unchecked

nodedb-strict/src/decode.rs:377–380

(&self, tuple: &[u8], col_idx: usize)

    }

    fn is_null_unchecked(&self, tuple: &[u8], col_idx: usize) -> bool {
        let bitmap_byte = tuple[9 + col_idx / 8];
        bitmap_byte & (1 << (col_idx % 8)) != 0
    }
}

/// Extract a fixed Int64 column as a raw i64.