This repository has been archived on 2023-03-24. You can view files and clone it, but cannot push or open issues or pull requests.
rustlings-exercises-completed/exercises/lifetimes/lifetimes1.rs

27 lines
726 B
Rust
Raw Normal View History

2022-07-15 07:01:32 -05:00
// lifetimes1.rs
//
// The Rust compiler needs to know how to check whether supplied references are
// valid, so that it can let the programmer know if a reference is at risk
// of going out of scope before it is used. Remember, references are borrows
// and do not own their own data. What if their owner goes out of scope?
//
// Execute `rustlings hint lifetimes1` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn longest(x: &str, y: &str) -> &str {
if x.len() > y.len() {
x
} else {
y
}
}
fn main() {
let string1 = String::from("abcd");
let string2 = "xyz";
let result = longest(string1.as_str(), string2);
2022-08-28 08:10:29 -05:00
println!("The longest string is '{}'", result);
2022-07-15 07:01:32 -05:00
}