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Rust Ownership & Memory Model🧠

Advanced→Expert

Rust 1.94 (2024 Edition)

Deep dive into the borrow checker, lifetimes, and smart pointers.

5

Sections

16

Lessons

15

Challenges

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16 lessons and 15 challenges, all 100% free.

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Why Lifetimes Exist

Lifetime Annotations & Elision

The 'static Lifetime

Subtyping & Variance

Static Lifetime Quiz(Sign in required)

Intermediate+20 Mana

Lifetime Elision Rule Order(Sign in required)

Advanced+30 Mana

Variance Matching(Sign in required)

Box<T>: Heap Allocation

Rc<T> & Arc<T>: Shared Ownership

Weak References & Reference Cycles

Rc Thread Safety(Sign in required)

Intermediate+20 Mana

Box Recursive Type(Sign in required)

Intermediate+20 Mana

Smart Pointer Use Cases(Sign in required)

Advanced+30 Mana

Cell<T>: Copy-Based Interior Mutability

RefCell<T>: Runtime Borrow Checking

Mutex<T> & RwLock<T>: Thread-Safe Interior Mutability

RefCell Panic(Sign in required)

Intermediate+20 Mana

Interior Mutability Selection(Sign in required)

Advanced+30 Mana

Interior Mutability Types(Sign in required)

Advanced+30 Mana

Struct Memory Layout

repr Attributes

Size Optimization Techniques

Repr C Usage(Sign in required)

Advanced+30 Mana

Option Box Size(Sign in required)

Alignment Padding(Sign in required)

Advanced+30 Mana

The Problem Pin Solves

The Unpin Trait

Pin in Practice

Unpin Meaning(Sign in required)

Pin Creation Order(Sign in required)

Async Unpin(Sign in required)

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16 interactive lessons and 15 hands-on challenges — learn in VS Code, Cursor, or the web.