rustlings/exercises/option/option2.rs
2020-05-16 22:48:18 +02:00

26 lines
812 B
Rust

// option2.rs
// Make me compile! Execute `rustlings hint option2` for hints
// I AM NOT DONE
fn main() {
let optional_value = Some(String::from("rustlings"));
// TODO: Make this an if let statement whose value is "Some" type
value = optional_value {
println!("the value of optional value is: {}", value);
} else {
println!("The optional value doesn't contain anything!");
}
let mut optional_values_vec: Vec<Option<i8>> = Vec::new();
for x in 1..10 {
optional_values_vec.push(Some(x));
}
// TODO: make this a while let statement - remember that vector.pop also adds another layer of Option<T>
// You can stack `Option<T>`'s into while let and if let
value = optional_values_vec.pop() {
println!("current value: {}", value);
}
}