// options2.rs // Execute `rustlings hint options2` or use the `hint` watch subcommand for a hint. // I AM NOT DONE #[cfg(test)] mod tests { #[test] fn simple_option() { let target = "rustlings"; let optional_target = Some(target); // TODO: Make this an if let statement whose value is "Some" type word = optional_target { assert_eq!(word, target); } } #[test] fn layered_option() { let mut range = 10; let mut optional_integers: Vec> = Vec::new(); for i in 0..(range + 1) { optional_integers.push(Some(i)); } // TODO: make this a while let statement - remember that vector.pop also adds another layer of Option // You can stack `Option`'s into while let and if let integer = optional_integers.pop() { assert_eq!(integer, range); range -= 1; } } }