From b4f5f3bc39fb2187c042ad2fa514e51d1261b4d1 Mon Sep 17 00:00:00 2001 From: Hunter Kvalevog Date: Sun, 27 Sep 2026 16:27:24 -0500 Subject: rustlings: complete 16 --- rustlings/solutions/16_lifetimes/lifetimes2.rs | 29 ++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) (limited to 'rustlings/solutions/16_lifetimes/lifetimes2.rs') diff --git a/rustlings/solutions/16_lifetimes/lifetimes2.rs b/rustlings/solutions/16_lifetimes/lifetimes2.rs index dcf2377..3ca4909 100644 --- a/rustlings/solutions/16_lifetimes/lifetimes2.rs +++ b/rustlings/solutions/16_lifetimes/lifetimes2.rs @@ -1,4 +1,29 @@ +fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { + if x.len() > y.len() { x } else { y } +} + fn main() { - // DON'T EDIT THIS SOLUTION FILE! - // It will be automatically filled after you finish the exercise. + let string1 = String::from("long string is long"); + // Solution1: You can move `strings2` out of the inner block so that it is + // not dropped before the print statement. + let string2 = String::from("xyz"); + let result; + { + result = longest(&string1, &string2); + } + println!("The longest string is '{result}'"); + // `string2` dropped at the end of the function. + + // ========================================================================= + + let string1 = String::from("long string is long"); + let result; + { + let string2 = String::from("xyz"); + result = longest(&string1, &string2); + // Solution2: You can move the print statement into the inner block so + // that it is executed before `string2` is dropped. + println!("The longest string is '{result}'"); + // `string2` dropped here (end of the inner scope). + } } -- cgit v1.2.3