Method evaluate

datafusion/functions-aggregate/src/first_last.rs:637–639

(&mut self, emit_to: EmitTo)

    }

    fn evaluate(&mut self, emit_to: EmitTo) -> Result<ArrayRef> {
        Ok(self.take_state(emit_to)?.0)
    }

    fn state(&mut self, emit_to: EmitTo) -> Result<Vec<ArrayRef>> {
        let (val_arr, orderings, is_sets) = self.take_state(emit_to)?;