Method visit_mut_pre

src/expr/src/visit.rs:371–381

(&mut self, f: &mut F)

    }

    fn visit_mut_pre<F>(&mut self, f: &mut F)
    where
        F: FnMut(&mut Self),
    {
        let mut stack = vec![self];
        while let Some(elt) = stack.pop() {
            f(elt);
            // Push children in reverse so they pop (and are visited) left-to-right.
            stack.extend(elt.children_mut().rev())
        }
    }

    fn try_visit_pre<F, E>(&self, f: &mut F) -> Result<(), E>
    where