Rust: What is the difference between Drop and RAII?

Drop — cleanup on scope exit. RAII — resource acquisition pattern.

Drop:

• Called when value goes out of scope.
• Custom cleanup logic.
• Cannot prevent drop.

RAII:

• Resource tied to lifetime.
• Automatic cleanup.
• Pattern, not trait.

1struct MyResource {
2    data: Vec<u8>,
3}
4
5impl Drop for MyResource {
6    fn drop(&mut self) {
7        println!("Cleaning up resource");
8    }
9}

Key: Drop implements RAII pattern in Rust.