Method evaluate_into

src/expr/src/linear.rs:1638–1653

(
            &'a self,
            datums: &mut Vec<Datum<'a>>,
            arena: &'a RowArena,
            row_buf: &'row mut Row,
        )

        /// returns `Ok(Some(row)).
        #[inline(always)]
        pub fn evaluate_into<'a, 'row>(
            &'a self,
            datums: &mut Vec<Datum<'a>>,
            arena: &'a RowArena,
            row_buf: &'row mut Row,
        ) -> Result<Option<&'row Row>, EvalError> {
            let passed_predicates = self.evaluate_inner(datums, arena)?;
            if !passed_predicates {
                Ok(None)
            } else {
                row_buf
                    .packer()
                    .extend(self.mfp.projection.iter().map(|c| datums[*c]));
                Ok(Some(row_buf))
            }
        }

        /// A version of `evaluate` which produces an iterator over `Datum`
        /// as output.