rustlings/exercises/16_lifetimes/lifetimes2.rs
2024-04-17 23:34:27 +02:00

21 lines
518 B
Rust

// So if the compiler is just validating the references passed to the annotated
// parameters and the return type, what do we need to change?
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
if x.len() > y.len() {
x
} else {
y
}
}
fn main() {
let string1 = String::from("long string is long");
let result;
{
let string2 = String::from("xyz");
result = longest(string1.as_str(), string2.as_str());
}
println!("The longest string is '{}'", result);
}