// ./src/trait/drop.md struct Droppable { name: &'static str, } // This trivial implementation of `drop` adds a print to console. impl Drop for Droppable { fn drop(&mut self) { println!("> Dropping {}", self.name); } } fn part0() { let _a = Droppable { name: "a" }; // block A { let _b = Droppable { name: "b" }; // block B { let _c = Droppable { name: "c" }; let _d = Droppable { name: "d" }; println!("Exiting block B"); } println!("Just exited block B"); println!("Exiting block A"); } println!("Just exited block A"); // Variable can be manually dropped using the `drop` function drop(_a); // TODO ^ Try commenting this line println!("end of the main function"); // `_a` *won't* be `drop`ed again here, because it already has been // (manually) `drop`ed } pub fn main() { part0(); }