broken_links

level 13: raw_pointers.md, undefined_behavior.md, unsafe_block.md level 14: as_ref_as_mut.md, deref_deref_mut_traits.md

• References & Borrowing

level 3: borrowing.md

---

level 12: declarative_macros_macro_rules.md level 13: unsafe_fn.md, extern_c.md level 15: inlining.md

• Functions

---

level 14: borrow_borrow_mut.md

• HashMap & HashSet

level 02: hashmap_k_v.md

---

level 14: deref_deref_mut_traits.md

• Smart Pointers (Box<T>, Rc<T>)

---

level 14: sealed_trait_pattern.md

• Visibility & Modules

---

level 12: attribute_macros.md

• Attributes

---

level 12: declarative_macros_macro_rules.md

• Expressions vs Statements

But we have: level 1: expressions.md and statements.md