rustlings/exercises/options/options2.rs

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2022-07-14 18:34:50 +03:00
// options2.rs
2022-07-14 18:53:42 +03:00
// Execute `rustlings hint options2` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() {
let optional_word = Some(String::from("rustlings"));
// TODO: Make this an if let statement whose value is "Some" type
word = optional_word {
println!("The word is: {}", word);
} else {
println!("The optional word doesn't contain anything");
}
let mut optional_integers_vec: Vec<Option<i8>> = Vec::new();
for x in 1..10 {
optional_integers_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
integer = optional_integers_vec.pop() {
println!("current value: {}", integer);
}
}