Understanding Rust's Ownership Model
Grasp the core rules of ownership, move semantics, and how they prevent common memory errors like double-free.
What is Rust Ownership?
Rust's ownership system is a set of rules that manage how your program uses memory. It's a core concept that helps Rust achieve memory safety without a garbage collector.
- No dangling pointers.
- No double-free errors.
- No data races in concurrent code.
It checks these rules at compile time!
Stack vs. Heap Memory
Programs use two main memory areas: the stack and the heap.
- Stack: Faster, fixed-size data (like integers, booleans, known-size types). Data is pushed and popped in order.
- Heap: Slower, variable-size data (like
String,Vec). Data is requested and returned by the allocator.
Ownership primarily manages data on the heap, ensuring its safe use and cleanup.
All lessons in this course
- Understanding Rust's Ownership Model
- References and Borrowing Explained
- Lifetimes for Safe References