Method evaluate_iter

src/expr/src/linear.rs:1661–1672

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

        /// datums without packing and then unpacking a row.
        #[inline(always)]
        pub fn evaluate_iter<'b, 'a: 'b>(
            &'a self,
            datums: &'b mut Vec<Datum<'a>>,
            arena: &'a RowArena,
        ) -> Result<Option<impl Iterator<Item = Datum<'a>> + 'b>, EvalError> {
            let passed_predicates = self.evaluate_inner(datums, arena)?;
            if !passed_predicates {
                Ok(None)
            } else {
                Ok(Some(self.mfp.projection.iter().map(move |i| datums[*i])))
            }
        }

        /// Populates `datums` with `self.expressions` and tests `self.predicates`.
        ///