Method take

src/expr/src/linear.rs:633–637

Returns `self`, and leaves behind an identity operator that acts on its output.

(&mut self)

    /// Returns `self`, and leaves behind an identity operator that acts on its output.
    pub fn take(&mut self) -> Self {
        let mut identity = Self::new(self.projection.len());
        std::mem::swap(self, &mut identity);
        identity
    }

    /// Convert the `MapFilterProject` into a staged evaluation plan.
    ///