From bf66df1a16461ef1ee50510803a3097914ffcb82 Mon Sep 17 00:00:00 2001 From: Hunter Kvalevog Date: Mon, 14 Sep 2026 17:15:13 -0500 Subject: Add rustlings --- rustlings/exercises/16_lifetimes/lifetimes1.rs | 28 ++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 rustlings/exercises/16_lifetimes/lifetimes1.rs (limited to 'rustlings/exercises/16_lifetimes/lifetimes1.rs') diff --git a/rustlings/exercises/16_lifetimes/lifetimes1.rs b/rustlings/exercises/16_lifetimes/lifetimes1.rs new file mode 100644 index 0000000..19e2d39 --- /dev/null +++ b/rustlings/exercises/16_lifetimes/lifetimes1.rs @@ -0,0 +1,28 @@ +// 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? + +// TODO: Fix the compiler error by updating the function signature. +fn longest(x: &str, y: &str) -> &str { + if x.len() > y.len() { + x + } else { + y + } +} + +fn main() { + // You can optionally experiment here. +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_longest() { + assert_eq!(longest("abcd", "123"), "abcd"); + assert_eq!(longest("abc", "1234"), "1234"); + } +} -- cgit v1.2.3